2933
4-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only
This is a 4-digit heading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
No rate is published at this level — check the specific 10-digit statistical code beneath it.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | See 10-digit codeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | —Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Codes within Heterocyclic compounds with nitrogen hetero-atom(s) only
144 more specific lines fall under 2933.
- 2933.11.00.00Phenazone (Antipyrine) and its derivatives10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure:6.5%
- 2933.19Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure:
- 2933.19.04.00Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:Free
- 2933.19.08.003-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:5.8%
- 2933.19.15.001,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:Free
- 2933.19.18.002-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:Free
- 2933.19.23.00Pesticides10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other:6.5%
- 2933.19.30Photographic chemicals8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other:6.5%
- 2933.19.30.10Couplers, for use in color negative photographic paper10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Photographic chemicals
- 2933.19.30.95Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Photographic chemicals
- 2933.19.35.00Drugs10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other:6.5%
- 2933.19.37.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.19.43.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.19.45.00Drugs10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Other:3.7%
- 2933.19.70.003-Methyl-5-pyrazolone10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:Free
- 2933.19.90.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:6.5%
- 2933.21.00.00Hydantoin and its derivatives10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure:6.5%
- 2933.29Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure:
- 2933.29.05.001-[1-((4-Chloro-2-(trifluoromethyl)phenyl)- imino)-2-propoxyethyl]-1H-imidazole (Triflumizole); and Ethylene thiourea10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:Free
- 2933.29.10.002-Phenylimidazole10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic:5.8%
- 2933.29.20.00Drugs10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other:6%
- 2933.29.35.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.29.43.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.29.45.00Drugs10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Other:3.7%
- 2933.29.60.00Imidazole10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:Free
- 2933.29.90.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:6.5%
- 2933.31.00.00Pyridine and its salts10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:Free
- 2933.32Piperidine and its salts6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:
- 2933.32.10.00Piperidine10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Piperidine and its salts:6.5%
- 2933.32.50.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Piperidine and its salts:6.5%
- 2933.33.01.00Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl (INN), ketobemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine (INN), pethidine (INN) intermediate A, phencyclidine (INN) (PCP), phenoperidine (INN), pipradrol (INN), piritramide (INN), propiram (INN), remifentanil (INN) and trimeperidine (INN); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:Free
- 2933.34.00.00Other fentanyls and their derivatives10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:6.5%
- 2933.35.00.003-Quinuclidinol10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:5.8%
- 2933.36.00.004-Anilino-N-phenethylpiperidine (ANPP)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:6.5%
- 2933.37.00.00N-Phenethyl-4-piperidone (NPP)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:6.5%
- 2933.39Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:
- 2933.39.08.001-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other:Free
- 2933.39.10.00Collidines, lutidines and picolines10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other:Free
- 2933.39.20.00p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other:5.8%
- 2933.39.21.00Fungicides10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Pesticides6.5%
- 2933.39.23.00o-Paraquat dichloride10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Pesticides > Herbicides:6.5%
- 2933.39.25.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Pesticides > Herbicides:6.5%
- 2933.39.27.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Pesticides6.5%
- 2933.39.31.00Antidepressants, tranquilizers and other psychotherapeutic agents10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Drugs:6.5%
- 2933.39.41.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Drugs:6.5%
- 2933.39.61Products described in additional U.S. note 3 to section VI8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:6.5%
- 2933.39.61.103-Quinuclidinyl benzilate10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI
- 2933.39.61.201-[N,N-Dialkyl (≤C10)-N-(n-(hydroxyl, cyano, acetoxy)alkyl (≤C10)) ammonio]-n-n-[N-(3- dimethylcarbamoxy-α-picolinyl)-N,N-dialkyl (≤C10) ammonio]decane dibromide (n=1-8)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI
- 2933.39.61.301,n-Bis[N-(3-dimethylcarbamoxy-α-picolyl)- N,N-dialkyl (≤ C10) ammonio]-alkane-(2,(n-1)- dione) dibromide (n=2-12)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI
- 2933.39.61.40N-phenyl-4-piperidinamine (4-AP), tert-butyl 4-(phenylamino)piperidine-1-carboxylate (tert-butyl 4-anilinopiperidine-1-carboxylate, 1-boc-4-AP), norfentanyl (N-phenyl-N-(4-piperidyl)propionamide), piperidin-4-one (4-piperidone) and tert-butyl 4-oxopiperidine-1-carboxylate (1-boc-4-piperidone); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI > Other:
- 2933.39.61.92Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI > Other:
- 2933.39.92.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: > Other: > Other: > Other:6.5%
- 2933.41.00.00Levorphanol (INN) and its salts10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused:Free
- 2933.49Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused:
- 2933.49.08.004,7-Dichloroquinoline10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other:6.5%
- 2933.49.10.00Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other:6.5%
- 2933.49.15.008-Methylquinoline and Isoquinoline10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other:5.8%
- 2933.49.17.00Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3- quinolinecarboxylate10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other:Free
- 2933.49.20.005-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate; Diiodo hydroxy quin; and Oxy quinoline sulfate10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other: > Other: > Drugs:6.5%
- 2933.49.26.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other: > Other: > Drugs:6.5%
- 2933.49.30.00Pesticides10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other: > Other:6.5%
- 2933.49.60.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other: > Other: > Other:6.5%
- 2933.49.70.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other: > Other: > Other:6.5%
- 2933.52Malonylurea (Barbituric acid) and its salts6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:
- 2933.52.10.00Malonylurea (barbituric acid)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Malonylurea (Barbituric acid) and its salts:Free
- 2933.52.90.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Malonylurea (Barbituric acid) and its salts:Free
- 2933.53.00.00Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:Free
- 2933.54.00.00Other derivatives of malonylurea (barbituric acid); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:3.7%
- 2933.55.00.00Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:Free
- 2933.59Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:
- 2933.59.10.00Herbicides10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Pesticides: > Aromatic or modified aromatic6.5%
- 2933.59.15.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Pesticides: > Aromatic or modified aromatic6.5%
- 2933.59.18.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Pesticides:6.5%
- 2933.59.21.00Antihistamines, including those principally used as anti-nauseants10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs: > Aromatic or modified aromatic:6.5%
- 2933.59.22.00Nicarbazin; and Trimethoprim10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs: > Aromatic or modified aromatic: > Anti-infective agents:6.5%
- 2933.59.36.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs: > Aromatic or modified aromatic: > Anti-infective agents:6.5%
- 2933.59.46.00Antidepressants, tranquilizers and other psychotherapeutic agents10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs: > Aromatic or modified aromatic:6.5%
- 2933.59.53.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs: > Aromatic or modified aromatic:6.5%
- 2933.59.59.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Drugs:3.7%
- 2933.59.70.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Other: > Aromatic or modified aromatic:6.5%
- 2933.59.80.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Other: > Aromatic or modified aromatic:6.5%
- 2933.59.85.002-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Other: > Other:Free
- 2933.59.95.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: > Other: > Other: > Other:6.5%
- 2933.61.00.00Melamine10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure:3.5%
- 2933.69Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure:
- 2933.69.20.002,4-Diamino-6-phenyl-1,3,5-triazine10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other:Free
- 2933.69.50.00Hexamethylenetetramine10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other:6.3%
- 2933.69.60Other8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other:3.5%
- 2933.69.60.10Cyanuric chloride10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other: > Other
- 2933.69.60.15Sodium dichloroisocyanurate and trichloroisocyanuric acid10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other: > Other > Pesticides:
- 2933.69.60.21Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other: > Other > Pesticides:
- 2933.69.60.30Products used principally for rubber processing10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other: > Other
- 2933.69.60.50Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: > Other: > Other
- 2933.71.00.006-Hexanelactam (ε-Caprolactam)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams:6.5%
- 2933.72.00.00Clobazam (INN) and methyprylon (INN)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams:Free
- 2933.79Other lactams6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams:
- 2933.79.04.002,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Aromatic or modified aromatic:Free
- 2933.79.08.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Aromatic or modified aromatic: > Other:6.5%
- 2933.79.15.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Aromatic or modified aromatic: > Other:6.5%
- 2933.79.20.00N-Methyl-2-pyrrolidone; and 2-Pyrrolidone10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Other:4.2%
- 2933.79.30.00N-Vinyl-2-pyrrolidone, monomer10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Other:5.5%
- 2933.79.40.0012-Aminododecanoic acid lactam10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Other:Free
- 2933.79.85.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Lactams: > Other lactams: > Other:6.5%
- 2933.91.00Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other:Free
- 2933.91.00.10Lorazepam (INN); salts thereof10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof
- 2933.91.00.50Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof
- 2933.92.00.00Azinphos-methyl10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other:Free
- 2933.99Other6-digit headingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other:
- 2933.99.01.00Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:Free
- 2933.99.02.002-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:Free
- 2933.99.05.00Acridine and indole10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:Free
- 2933.99.06.00α-Butyl-α-(4-chlorophenyl)-1H-1,2,4- triazole-1- propanenitrile (Myclobutanil); andα-[2-(4-Chlorophenyl)ethyl]-α-phenyl-1H- 1,2,4-triazole-1-propanenitrile (Fenbuconazole)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:6.5%
- 2933.99.08.00Aceto acetyl-5-amino benz imidazolone; 3-(2H-Benzo triazol-2-yl)-5-(tert-butyl)-4- hydroxy benzene propanoic acid, C7-C9 branched or linear alkyl esters; 2-(2H-Benzotriazol-2-yl)-6-dodecyl-4- methyl phenol, in liquid form, branched and linear; and 1,3,3-Trimethyl-2-methyleneindoline10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:Free
- 2933.99.11.00Carbazole10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:Free
- 2933.99.12.006-Bromo-5-methyl-1H-imidazo[4,5-b]- pyridine; 2-sec-Butyl-4-tert-butyl-6-(benzotriazol-2- yl)phenol; 2-tert-Butyl-4-methyl-6-(5-chlorobenzotri- azol-2-yl)phenol; 2,4-Di-tert-butyl-6-(benzotriazol-2-yl)phenol; 2,4-Di-tert-butyl-6-(5-chlorobenzotriazol-2- yl)phenol; 2,3-Dichloro-6-quinoxalinecarbonyl chloride; 1-Hydroxy-2-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid, sodium salt; Iminodibenzyl(10,11-dihydro-5H-dibenz- [b,f]azepine); Indoline; 3-Methylbenzo[f]quinoline; 2-Methylindoline; 2-Methylmercaptobenzimidazole; 1-Methyl-2-phenylindole; 1-Methylpyrazine; 2,4-Methylpyrazolic acid; 2-Phenylbenzimidazole; 2-Phenylindole; Tetramethylpyrazine; 2,3,5-Triphenyltetrazolium chloride;dl-Tryptophan; and Vinylcarbazole, monomer10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic:5.8%
- 2933.99.14.005-Amino-4-chloro-α-phenyl-3- pyridazinone10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Pesticides:6.5%
- 2933.99.16.00o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Pesticides:Free
- 2933.99.17.01Insecticides10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Pesticides: > Other:6.5%
- 2933.99.22.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Pesticides: > Other:6.5%
- 2933.99.24.00Photographic chemicals10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other:6.5%
- 2933.99.26.00Antihistamines10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs:6.5%
- 2933.99.42.00Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Anti-infective agents:Free
- 2933.99.46.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Anti-infective agents:6.5%
- 2933.99.51.00Hydralazine hydrochloride10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Cardiovascular drugs:Free
- 2933.99.53.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Cardiovascular drugs:6.5%
- 2933.99.55Analgesics, antipyretics and nonhormonal anti-inflammatory agents8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system:6.5%
- 2933.99.55.10Tolmetin10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Analgesics, antipyretics and nonhormonal anti-inflammatory agents
- 2933.99.55.20Tolmetin sodium dihydrate10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Analgesics, antipyretics and nonhormonal anti-inflammatory agents
- 2933.99.55.30Tolmetin sodium (anhydrous)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Analgesics, antipyretics and nonhormonal anti-inflammatory agents
- 2933.99.55.90Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Analgesics, antipyretics and nonhormonal anti-inflammatory agents
- 2933.99.58.00Droperidol; and Imipramine hydrochloride10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Antidepressants, tranquilizers and other psychotherapeutic agents:Free
- 2933.99.61.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system: > Antidepressants, tranquilizers and other psychotherapeutic agents:6.5%
- 2933.99.65.00Anticonvulsants, hypnotics and sedatives10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system:6.5%
- 2933.99.70.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs: > Drugs primarily affecting the central nervous system:6.5%
- 2933.99.75.00Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Drugs:6.5%
- 2933.99.79.00Products described in additional U.S. note 3 to section VI10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.99.82Other8-digit subheadingHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Other:6.5%
- 2933.99.82.10Benzotriazole (CAS No. 95-14-7)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Other: > Other
- 2933.99.82.20Tolyltriazole (CAS No. 29385-43-1)10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Other: > Other
- 2933.99.82.90Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Aromatic or modified aromatic: > Other: > Other: > Other
- 2933.99.85.003-Amino-1,2,4-triazole10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Other:3.7%
- 2933.99.89.00Hexamethyleneimine10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Other:Free
- 2933.99.90.00Drugs10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Other: > Other:3.7%
- 2933.99.97.01Other10-digit statistical codeHeterocyclic compounds with nitrogen hetero-atom(s) only: > Other: > Other: > Other: > Other:6.5%
Chapter 29: Organic Chemicals
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 29Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
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