Heading 29.33
US HTSHeterocyclic compounds with nitrogen hetero-atom(s) only
27 subheadings · 113 tariff lines
Code / DescriptionMFN Rate
2933.11.00Phenazone (Antipyrine) and its derivatives
6.5%Code / DescriptionMFN Rate
2933.19.04Aminoethylphenylpyrazole (phenylmethylaminopyrazole); 3-methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-tolylmethylpyrazolone)
Free2933.19.083-(5-Amino-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid; amino-J-pyrazolone; and another 12 specified chemicals
5.8%2933.19.151,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (difenzoquat methyl sulfate)
Free2933.19.182-Chloro-5-sulfophenylmethylpyrazolone; phenylcarbethyoxypyrazolone; and 3 other specified chemicals
Free2933.19.23Aromatic or modified aromatic pesticides containing an unfused pyrazole ring (whether or not hydrogenated) in the structure
6.5%2933.19.30Aromatic or modified aromatic photographic chemicals containing an unfused pyrazole ring (whether or n/hydrogenated) in the structure, nesoi
6.5%2933.19.35Aromatic or modified aromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only containing an unfused pyrazole ring
6.5%2933.19.37Aromatic or mod. aromatic compound desc in add US note 3 to section VI contain an unfused pyrazole ring (w/wo hydrogenated) in the structure
6.5%2933.19.43Aromatic or modified aromatic compounds (excluding products in add US note 3 to sec VI) containing an unfused pyrazole ring in the structure
6.5%2933.19.45Nonaromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only containing an unfused pyrazole ring
3.7%2933.19.703-Methyl-5-pyrazolone
Free2933.19.90Other compound (excluding aromatic, modified aromatic & drugs) containing unfused pyrazole ring (whether or n/hydrogenated) in the structure
6.5%Code / DescriptionMFN Rate
2933.21.00Hydantoin and its derivatives
6.5%Code / DescriptionMFN Rate
2933.29.051-[1-((4-Chloro-2-(trifluoromethyl)phenyl)imino)-2-propoxyethyl]-1H-imidazole (triflumizole); and ethylene thiourea
Free2933.29.102-Phenylimidazole
5.8%2933.29.20Aromatic or modified aromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only cont. an unfused imidazole ring
6%2933.29.35Aromatic or mod. aromatic goods in add US note 3 to sect VI containing an unfused imidazole ring (whether or n/hydrogenated) in structure
6.5%2933.29.43Aromatic or mod aromatic goods contng unfused imidazole ring (whether or n/hydrogenated) in the structure (exc prod in add US note 3 sec VI)
6.5%2933.29.45Nonaromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused imidazole ring, nesoi
3.7%2933.29.60Imidazole
Free2933.29.90Other compounds (excluding drugs, aromatic and modified aromatic compounds) containing an unfused imidazole ring (whether or n/hydrogenated)
6.5%Code / DescriptionMFN Rate
2933.31.00Pyridine and its salts
Free2933.32Piperidine2 lines
Code / DescriptionMFN Rate
2933.34.00Other fentanyls and their derivatives, containing an unfused pyrazole ring
6.5%2933.353-Quinuclidinol1 line
Code / DescriptionMFN Rate
2933.35.003-Quinuclidinol
5.8%Code / DescriptionMFN Rate
2933.36.004-Anilino-N-phenethylpiperidine (ANPP)
6.5%Code / DescriptionMFN Rate
2933.37.00N-Phenethyl-4-piperidone (NPP)
6.5%Code / DescriptionMFN Rate
2933.39.081-(3-Sulfapropyl)pryidinium hydroxide; N,N-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,6-hexanediamine; and 5 other specified chemicals
Free2933.39.10Collidines, lutidines and picolines
Free2933.39.20p-Chloro-2-benzylpyridine & other specified heterocyclic compounds, w nitrogen hetero-atom(s) only cont. an unfused pyridine ring
5.8%2933.39.21Fungicides of heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyridine ring
6.5%2933.39.23o-Paraquat dichloride
6.5%2933.39.25Herbicides nesoi, of heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyridine ring
6.5%2933.39.27Pesticides nesoi, of heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyridine ring
6.5%2933.39.31Psychotherapeutic agents of heterocyclic compounds with nitrogen hetero-atom(s) only, containing an unfused pyridine ring, nesoi
6.5%2933.39.41Drugs containing an unfused pyridine ring (whether or not hydrogenated) in the structure, nesoi
6.5%2933.39.61Heterocyclic compounds with nitrogen hetero-atom(s) only containing an unfused pyridine ring, described in add. US note 3 to sec. VI
6.5%2933.39.92Heterocyclic compounds with nitrogen hetero-atom(s) only containing an unfused pyridine ring, nesoi
6.5%Code / DescriptionMFN Rate
2933.41.00Levorphenol (INN) and its salts
Free2933.494,7-Dichloroquinoline9 lines
Code / DescriptionMFN Rate
2933.49.084,7-Dichloroquinoline
6.5%2933.49.10Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4-trimethylquinoline)
6.5%2933.49.158-Methylquinoline and Isoquinoline
5.8%2933.49.17Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinoline carboxylate
Free2933.49.205-Chloro-7-iodo-8-quinolinol (Iodochlorhydroxyquin); Decoquinate; Diiodohydroxyquin; and Oxyquinoline sulfate
6.5%2933.49.26Drugs containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) not further fused, nesoi
6.5%2933.49.30Pesticides of heterocyclic compounds with nitrogen hetero-atom(s) only, cont. a quinoline or isoquinoline ring-system, not further fused
6.5%2933.49.60Products described in add. US note 3 to sec VI containing quinoline or isoquinoline ring-system (whether or n/hydrogenated), n/further fused
6.5%2933.49.70Heterocyclic compounds with nitrogen hetero-atom(s) only, containing a quinoline ring-system, not further fused, nesoi
6.5%Code / DescriptionMFN Rate
2933.52.10Malonylurea (barbituric acid)
Free2933.52.90Salts of barbituric acid
FreeCode / DescriptionMFN Rate
2933.54.00Other derivatives of malonylurea (barbituric acid); salts thereof
3.7%2933.55Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof1 line
Code / DescriptionMFN Rate
2933.55.00Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof
FreeCode / DescriptionMFN Rate
2933.59.10Aromatic or modified aromatic herbicides of heterocyclic compounds with nitrogen hetero-atom(s) only, cont. a pyrimidine or piperazine ring
6.5%2933.59.15Aromatic or mod. aromatic pesticides nesoi, of heterocyclic compounds with nitrogen hetero-atom(s) only cont. pyrimidine or piperazine ring
6.5%2933.59.18Nonaromatic pesticides of heterocyclic compounds with nitrogen hetero-atom(s) only, cont. pyrimidine or piperazine ring, nesoi
6.5%2933.59.21Antihistamines, including those principally used as antinauseants
6.5%2933.59.22Nicarbazin and trimethoprim
6.5%2933.59.36Anti-infective agents nesoi, of heterocyclic compounds with nitrogen hetero-atom(s) only, cont. pyrimidine, piperazine ring
6.5%2933.59.46Psychotherapeutic agents of heterocyclic compounds with nitrogen hetero-atom(s) only, cont. pyrimidine or piperazine ring, nesoi
6.5%2933.59.53Other aromatic or modified aromatic drugs containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure
6.5%2933.59.59Nonaromatic drugs of heterocyclic compounds nesoi, with nitrogen hetero-atom(s) only, cont. a pyrimidine or piperazine ring
3.7%2933.59.70Aromatic heterocyclic compounds nesoi, with nitrogen hetero-atom(s) only, cont. pyrimidine or piperazine ring, in add. U.S. note 3, sec. VI
6.5%2933.59.80Aromatic or modified aromatic heterocyclic compounds nesoi, with nitrogen hetero-atom(s) only, cont. pyrimidine or piperazine ring
6.5%2933.59.852-Amino-4-chloro-6-methoxypyrimidine; 2-amino-4,6-dimethoxypyrimidine; and 6-methyluracil
Free2933.59.95Other (excluding aromatic or mod aromatic) compds containing pyrimidine ring (whether or n/hydrogenated) or piperazine ring in the structure
6.5%2933.61Melamine1 line
Code / DescriptionMFN Rate
2933.61.00Melamine
3.5%Code / DescriptionMFN Rate
2933.71.006-Hexanelactam (epsilon-Caprolactam)
6.5%Code / DescriptionMFN Rate
2933.72.00Clobazam (INN) and methyprylon (INN)
FreeCode / DescriptionMFN Rate
2933.79.042,4-Dihydro-3,6-diphenylpyrrolo-(3,4-C)pyrrole-1,4-dione
Free2933.79.08Aromatic or modified aromatic lactams with nitrogen hetero-atoms only described in additional U.S. note 3 to section VI
6.5%2933.79.15Aromatic or modified aromatic lactams, nesoi
6.5%2933.79.20N-Methyl-2-pyrrolidone; and 2-pyrrolidone
4.2%2933.79.30N-Vinyl-2-pyrrolidone, monomer
5.5%2933.79.4012-Aminododecanoic acid lactam
Free2933.79.85Aromatic or modified aromatic lactams with nitrogen hetero-atoms only, nesoi
6.5%2933.92Azinphos-methyl1 line
Code / DescriptionMFN Rate
2933.92.00Azinphos-methyl
FreeCode / DescriptionMFN Rate
2933.99.01Butyl (R)-2-[4-(5-triflouromethyl-2-pyridinyloxy)phenoxy]propanoate
Free2933.99.022-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]propionic acid, ethyl ester; and 1 other specified aromatic chemical
Free2933.99.05Acridine and indole
Free2933.99.06alpha-Butyl-alpha-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrile (Mycolbutanil); and one other specified aromatic chemical
6.5%2933.99.08Acetoacetyl-5-aminobenzimidazolone; 1,3,3-Trimethyl-2-methyleneindoline; and two other specified aromatic chemicals
Free2933.99.11Carbazole
Free2933.99.126-Bromo-5-methyl-1H-imidazo-(4,5-b)pyridine; 2-sec-butyl-4-tert-butyl-6-(benzotriazol-2-yl)phenol; 2-methylindoline; and other specific
5.8%2933.99.145-Amino-4-chloro-alpha-phenyl-3-pyridazinone
6.5%2933.99.16o-Diquat dibromide (1,1-Ethylene-2,2-dipyridylium dibromide)
Free2933.99.17Aromatic or modified aromatic insecticides with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.22Other heterocyclic aromatic or modified aromatic pesticides with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.24Aromatic or modified aromatic photographic chemicals with nitrogen hetero-atom(s) only
6.5%2933.99.26Aromatic or modified aromatic antihistamines of heterocyclic compounds with nitrogen hetero-atom(s) only
6.5%2933.99.42Acriflavin; Acriflavin hydrochloride; Carbadox; Pyrazinamide
Free2933.99.46Aromatic or modified aromatic anti-infective agents of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.51Hydralazine hydrochloride
Free2933.99.53Aromatic or modified aromatic cardiovascular drugs of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.55Aromatic or modified aromatic analgesics and certain like affecting chemicals, of heterocyclic compounds with nitrogen hetero-atom(s) only
6.5%2933.99.58Droperidol; and Imipramine hydrochloride
Free2933.99.61Aromatic/modified aromatic psychotherapeutic agents, affecting the CNS, of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.65Aromatic or modified aromatic anticonvulsants, hypnotics and sedatives, of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.70Aromatic or modified aromatic drugs affecting the central nervous system, of heterocyclic compounds with nitrogen atom(s) only, nesoi
6.5%2933.99.75Aromatic or modified aromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%2933.99.79Aromatic or modified aromatic compounds with nitrogen hetero-atom(s) only described in additional U.S. note 3 to section VI
6.5%2933.99.82Aromatic or mod. aromatic compounds with nitrogen hetero-atom(s) only other than products described in add. U.S. note 3 to section VI, nesoi
6.5%2933.99.853-Amino-1,2,4-triazole
3.7%2933.99.89Hexamethyleneimine
Free2933.99.90Nonaromatic drugs of heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
3.7%2933.99.97Nonaromatic heterocyclic compounds with nitrogen hetero-atom(s) only, nesoi
6.5%Source: US International Trade Commission (USITC). For informational purposes only. Consult the official HTS and a licensed customs broker for binding rates.