Heading 2933: Heterocyclic compounds with nitrogen hetero-atom(s) only

In chapter 29, Organic chemicals. 113 rate lines, laid out as HTS Revision 20 (2026) prints them.

HTS number	Description	Units	General	Special	Column 2
2933	Heterocyclic compounds with nitrogen hetero-atom(s) only:
	Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure:
2933.11.00.00	Phenazone (Antipyrine) and its derivatives	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 49.5%
2933.19	Other:
	Aromatic or modified aromatic:
2933.19.04.00	Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone)	kg	Free		15.4¢/kg + 39.5%
2933.19.08.00	3-(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 Sulfinpyrazone	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 39.5%
2933.19.15.00	1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate)	kg	Free		15.4¢/kg + 48.5%
2933.19.18.00	2-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 pyrazolone	kg	Free		15.4¢/kg + 52%
	Other:
2933.19.23.00	Pesticides	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2933.19.30	Photographic chemicals		6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 50%
2933.19.30.10	Couplers, for use in color negative photographic paper	kg
2933.19.30.95	Other	kg
2933.19.35.00	Drugs	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 47.5%
	Other:
2933.19.37.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
2933.19.43.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
	Other:
2933.19.45.00	Drugs	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
	Other:
2933.19.70.00	3-Methyl-5-pyrazolone	kg	Free		30.5%
2933.19.90.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30.5%
	Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure:
2933.21.00.00	Hydantoin and its derivatives	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 63%
2933.29	Other:
	Aromatic or modified aromatic:
2933.29.05.00	1-[1-((4-Chloro-2-(trifluoromethyl)phenyl)- imino)-2-propoxyethyl]-1H-imidazole (Triflumizole); and Ethylene thiourea	kg	Free		15.4¢/kg + 52%
2933.29.10.00	2-Phenylimidazole	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
	Other:
2933.29.20.00	Drugs	kg	6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 51%
	Other:
2933.29.35.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.29.43.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
	Other:
2933.29.45.00	Drugs	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
	Other:
2933.29.60.00	Imidazole	kg	Free		30.5%
2933.29.90.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30.5%
	Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure:
2933.31.00.00	Pyridine and its salts	kg	Free		Free
2933.32	Piperidine and its salts:
2933.32.10.00	Piperidine	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
2933.32.50.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
2933.33.01.00	Alfentanil (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 thereof	kg	Free		15.4¢/kg + 149.5%
2933.34.00.00	Other fentanyls and their derivatives	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.35.00.00	3-Quinuclidinol	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
2933.36.00.00	4-Anilino-N-phenethylpiperidine (ANPP)	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.37.00.00	N-Phenethyl-4-piperidone (NPP)	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.39	Other:
2933.39.08.00	1-(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 chloride	kg	Free		15.4¢/kg + 52%
2933.39.10.00	Collidines, lutidines and picolines	kg	Free		Free
2933.39.20.00	p-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 acid	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
	Other:
	Pesticides
2933.39.21.00	Fungicides	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40%
	Herbicides:
2933.39.23.00	o-Paraquat dichloride	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40.5%
2933.39.25.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2933.39.27.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 64.5%
	Drugs:
2933.39.31.00	Antidepressants, tranquilizers and other psychotherapeutic agents	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 149.5%
2933.39.41.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 65%
	Other:
2933.39.61	Products described in additional U.S. note 3 to section VI		6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.39.61.10	3-Quinuclidinyl benzilate	kg
2933.39.61.20	1-[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)	kg
2933.39.61.30	1,n-Bis[N-(3-dimethylcarbamoxy-α-picolyl)- N,N-dialkyl (≤ C10) ammonio]-alkane-(2,(n-1)- dione) dibromide (n=2-12)	kg
	Other:
2933.39.61.40	N-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 thereof	kg
2933.39.61.92	Other	kg
2933.39.92.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
	Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused:
2933.41.00.00	Levorphanol (INN) and its salts	kg	Free		15.4¢/kg + 67.5%
2933.49	Other:
2933.49.08.00	4,7-Dichloroquinoline	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.49.10.00	Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline)	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 55%
2933.49.15.00	8-Methylquinoline and Isoquinoline	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 39.5%
2933.49.17.00	Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3- quinolinecarboxylate	kg	Free		15.4¢/kg + 52%
	Other:
	Drugs:
2933.49.20.00	5-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate; Diiodo hydroxy quin; and Oxy quinoline sulfate	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 46%
2933.49.26.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 67.5%
2933.49.30.00	Pesticides	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40%
	Other:
2933.49.60.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
2933.49.70.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 52%
	Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure:
2933.52	Malonylurea (Barbituric acid) and its salts:
2933.52.10.00	Malonylurea (barbituric acid)	kg	Free		25%
2933.52.90.00	Other	kg	Free		50%
2933.53.00.00	Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof	kg	Free		50%
2933.54.00.00	Other derivatives of malonylurea (barbituric acid); salts thereof	kg	3.7%	Free (A+,AU,BH,CL,CO,D, E,IL, JO,K,KR, L,MA,OM,P, PA,PE,S,SG)	50%
2933.55.00.00	Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof	kg	Free		15.4¢/kg + 149.5%
2933.59	Other:
	Pesticides:
	Aromatic or modified aromatic
2933.59.10.00	Herbicides	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2933.59.15.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 64.5%
2933.59.18.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	30.5%
	Drugs:
	Aromatic or modified aromatic:
2933.59.21.00	Antihistamines, including those principally used as anti-nauseants	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 82%
	Anti-infective agents:
2933.59.22.00	Nicarbazin; and Trimethoprim	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 46%
2933.59.36.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 67.5%
2933.59.46.00	Antidepressants, tranquilizers and other psychotherapeutic agents	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 149.5%
2933.59.53.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 45%
2933.59.59.00	Other	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
	Other:
	Aromatic or modified aromatic:
2933.59.70.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.59.80.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
	Other:
2933.59.85.00	2-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil	kg	Free		30.5%
2933.59.95.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	30.5%
	Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure:
2933.61.00.00	Melamine	kg	3.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2933.69	Other:
2933.69.20.00	2,4-Diamino-6-phenyl-1,3,5-triazine	kg	Free		25%
2933.69.50.00	Hexamethylenetetramine	kg	6.3%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	58%
2933.69.60	Other		3.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	25%
2933.69.60.10	Cyanuric chloride	kg
	Pesticides:
2933.69.60.15	Sodium dichloroisocyanurate and trichloroisocyanuric acid	kg
2933.69.60.21	Other	kg
2933.69.60.30	Products used principally for rubber processing	kg
2933.69.60.50	Other	kg
	Lactams:
2933.71.00.00	6-Hexanelactam (ε-Caprolactam)	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40%
2933.72.00.00	Clobazam (INN) and methyprylon (INN)	kg	Free		15.4¢/kg + 52%
2933.79	Other lactams:
	Aromatic or modified aromatic:
2933.79.04.00	2,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione	kg	Free		15.4¢/kg + 52%
	Other:
2933.79.08.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.79.15.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
	Other:
2933.79.20.00	N-Methyl-2-pyrrolidone; and 2-Pyrrolidone	kg	4.2%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2933.79.30.00	N-Vinyl-2-pyrrolidone, monomer	kg	5.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	40%
2933.79.40.00	12-Aminododecanoic acid lactam	kg	Free		30.5%
2933.79.85.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	30.5%
	Other:
2933.91.00	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		Free		15.4¢/kg + 149.5%
2933.91.00.10	Lorazepam (INN); salts thereof	kg
2933.91.00.50	Other	kg
2933.92.00.00	Azinphos-methyl	kg	Free		15.4¢/kg + 64.5%
2933.99	Other:
	Aromatic or modified aromatic:
2933.99.01.00	Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate	kg	Free		15.4¢/kg + 50%
2933.99.02.00	2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester	kg	Free		15.4¢/kg + 64.5%
2933.99.05.00	Acridine and indole	kg	Free		Free
2933.99.06.00	α-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)	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 64.5%
2933.99.08.00	Aceto 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-methyleneindoline	kg	Free		15.4¢/kg + 52%
2933.99.11.00	Carbazole	kg	Free		15.4¢/kg + 39.5%
2933.99.12.00	6-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, monomer	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 39.5%
	Other:
	Pesticides:
2933.99.14.00	5-Amino-4-chloro-α-phenyl-3- pyridazinone	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40.5%
2933.99.16.00	o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide)	kg	Free		15.4¢/kg + 40.5%
	Other:
2933.99.17.01	Insecticides	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 64.5%
2933.99.22.00	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 64.5%
2933.99.24.00	Photographic chemicals	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 50%
	Drugs:
2933.99.26.00	Antihistamines	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 45%
	Anti-infective agents:
2933.99.42.00	Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide	kg	Free		15.4¢/kg + 46%
2933.99.46.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 67.5%
	Cardiovascular drugs:
2933.99.51.00	Hydralazine hydrochloride	kg	Free		15.4¢/kg + 47.5%
2933.99.53.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 65%
	Drugs primarily affecting the central nervous system:
2933.99.55	Analgesics, antipyretics and nonhormonal anti-inflammatory agents		6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg +47.5%
2933.99.55.10	Tolmetin	kg
2933.99.55.20	Tolmetin sodium dihydrate	kg
2933.99.55.30	Tolmetin sodium (anhydrous)	kg
2933.99.55.90	Other	kg
	Antidepressants, tranquilizers and other psychotherapeutic agents:
2933.99.58.00	Droperidol; and Imipramine hydrochloride	kg	Free		15.4¢/kg + 45.5%
2933.99.61.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 149.5%
2933.99.65.00	Anticonvulsants, hypnotics and sedatives	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2933.99.70.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 58.5%
2933.99.75.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 45%
	Other:
2933.99.79.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.99.82	Other		6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 52%
2933.99.82.10	Benzotriazole (CAS No. 95-14-7)	kg
2933.99.82.20	Tolyltriazole (CAS No. 29385-43-1)	kg
2933.99.82.90	Other	kg
	Other:
2933.99.85.00	3-Amino-1,2,4-triazole	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2933.99.89.00	Hexamethyleneimine	kg	Free		30.5%
	Other:
2933.99.90.00	Drugs	kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2933.99.97.01	Other	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	30.5%

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Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.