HS 29.33 — Heterocyclic compounds with nitrogen hetero-atom(s) only.

Chapter 29 Organic chemicals. · SECTION VI PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES · Edition 2026-04-01 (effective 1 April 2026)

Import duty rates for heading 29.33 from Japan's official tariff schedule. Which column applies? Most imports take the WTO rate (or General/Temporary where shown, if lower); GSP/LDC are preferential rates for developing countries; EPA rates (inside each row) apply when your goods qualify under that agreement's rules of origin. Rows without a percentage rate (specific, compound, seasonal or quota rates) need case-by-case review. Use the Calc button for the landed-cost estimate.

Code	Description	General	WTO	GSP	Unit	Law
29.33	Heterocyclic compounds with nitrogen hetero-atom(s) only.
	Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure :
2933.11 000	Phenazone (antipyrin) and its derivatives EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.19 000	Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.4% · Korea / (RCEP): 1.4%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
	Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure :
2933.21	Hydantoin and its derivatives	4.6%		Free
2933.21 100	- 3-Bromo-1-chloro-5-dimethylhydantoin EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free		Free		KG	PD / NA / PA / EX / CR
2933.21 900	- Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free		3.1%		KG	PD / NA / PA / EX / CR
2933.29 000	Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.4% · Korea / (RCEP): 1.4%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
	Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure :
2933.31 000	Pyridine and its salts EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	Free	(Free)		KG	PD / NA / PA / EX / CR
2933.32 000	Piperidine and its salts EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.33 000	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 EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): ! Free～1.9% · Korea / (RCEP): ! Free～1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.34 000	Other fentanyls and their derivatives EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.35 000	3-Quinuclidinol EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.36 000	4-Anilino-N-phenethylpiperidine (ANPP) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.37 000	N-Phenethyl-4-piperidone (NPP) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.39	Other
2933.39 110	1 Picoline and O, O-Diethyl-O-3, 5, 6-trichloro-2-pyridyl-phosphorothioate (chloropyriphos) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	Free	(Free)		KG	PD / NA / PA / EX / CR
2933.39 120	2 1,1,3,5-Tetramethylpiperidine-1-ium hydroxide EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): (1.9%) · Korea / (RCEP): (1.9%)	Free	(3.1%)		KG	PD / NA / PA / EX / CR
2933.39 220	3 Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
	Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused :
2933.41 000	Levorphanol (INN) and its salts EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.49	Other
2933.49 100	1 Dextro-3-hydroxy-N-methylmorphinan; dextro-3-methoxy-N-methylmorphinan hydrobromide EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	3.9%	3.3%	Free	KG	PD / NA / PA / EX / CR
2933.49 900	2 Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.4% · Korea / (RCEP): 1.4%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
	Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure :
2933.52 000	Malonylurea (barbituric acid) and its salts EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.53 000	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 EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.54 000	Other derivatives of malonylurea (barbituric acid); salts thereof EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.55 000	Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR / AD
2933.59	Other
2933.59 100	1 1, 3-Dimethyl-2, 6-dioxo-4-amino-5-formylaminopyrimidine EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	Free	(Free)		KG	PD / NA / PA / EX / CR / AD
2933.59 300	2 1,4-Diazabicyclo [2,2,2] octane (triethylenediamine) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	3.2%	3.1%	Free	KG	PD / NA / PA / EX / CR / AD
2933.59 400	3 Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR / AD
	Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure :
2933.61 000	Melamine EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.69 000	Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.4% · Korea / (RCEP): 1.4%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR / AD
	Lactams :
2933.71 000	6-Hexanelactam (epsilon-caprolactam) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	5.6%	4.7%	Free	KG	PD / NA / PA / EX / CR
2933.72 000	Clobazam (INN) and methyprylon (INN) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	Free	Free	KG	PD / NA / PA / EX / CR
2933.79 000	Other lactams EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.8% · Korea / (RCEP): 1.8%	4.6%	3.9%	Free	KG	PD / NA / PA / EX / CR
	Other
2933.91 000	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 EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.92 000	Azinphos-methyl (ISO) EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR
2933.99	Other
2933.99 010	1 Hydralazine hydrochloride EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): Free · Korea / (RCEP): Free	3.9%	3.3%	Free	KG	PD / NA / PA / EX / CR
2933.99 090	2 Other EPA rates (21) Singapore: Free · Mexico: Free · Malaysia: Free · Chile: Free · Thailand: Free · Indonesia: Free · Brunei: Free · ASEAN: Free · Philippines: Free · Switzerland: Free · Viet Nam: Free · India: Free · Peru: Free · Australia: Free · Mongolia: Free · CPTPP: Free · EU: Free · UK: Free · ASEAN/Australia/New Zealand(RCEP): Free · China / (RCEP): 1.9% · Korea / (RCEP): 1.9%	4.6%	3.1%	Free	KG	PD / NA / PA / EX / CR

← HS 2932 · All chapters · HS 2934 →

Source & disclaimer. Rates from Japan Customs, tariff schedule 2026-04-01 (Government Standard Terms of Use). Reference only — classification and the applicable rate are decided by customs at declaration; confirm with a licensed customs broker. Consumption tax (10%) applies on top of duty. See the import taxes guide and the customs FX rates.