HS code 293379: Lactams

What 293379 covers and what it doesn’t

Official text: Heterocyclic compounds with nitrogen hetero-atom(s) only › Lactams › Other lactams.

This is the “other” line of heading 2933 (heterocyclic compounds with nitrogen hetero-atom(s) only). It takes goods of that heading that no more specific subheading names. These go elsewhere:

• 293311 Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure — Phenazone (antipyrin) and its derivatives
• 293319 Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure — Other
• 293321 Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure — Hydantoin and its derivatives
• 293329 Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure — Other
• 293331 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — Pyridine and its salts
• 293332 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — Piperidine and its salts
• 293333 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — 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
• 293334 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — Other fentanyls and their derivatives
• 293335 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — 3-Quinuclidinol
• 293336 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — 4-Anilino-N-phenethylpiperidine (ANPP)
• 293337 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — N-Phenethyl-4-piperidone (NPP)
• 293339 Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure — Other
• 293341 Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused — Levorphanol (INN) and its salts
• 293349 Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused — Other
• 293352 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure — Malonylurea (barbituric acid) and its salts
• 293353 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure — 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
• 293354 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure — Other derivatives of malonylurea (barbituric acid); salts thereof
• 293355 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure — Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof
• 293359 Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure — Other
• 293361 Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure — Melamine
• 293369 Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure — Other
• 293371 Lactams — 6-Hexanelactam (epsilon-caprolactam)
• 293372 Lactams — Clobazam (INN) and methyprylon (INN)
• 293391 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
• 293392 Azinphos-methyl (ISO)
• 293399 Other

Nearby codes to check

• Heading 2933 Heterocyclic compounds with nitrogen hetero-atom(s) only: every subheading side by side.

US duty rate

0%–6.5%

General (MFN) rate in the US Harmonized Tariff Schedule, 2026 edition. A range means the rate depends on the 8-digit US line your product falls under. Extra duties such as Section 301, Section 232 or anti-dumping orders can apply on top, depending on origin. Check the lines on hts.usitc.gov. Not legal advice.

Who imports under 293379

EximAgent lists companies with recorded shipments under this code, built from customs records, with who they buy from and how often. See importers of 293379 →

Common questions

What is HS code 293379?

Heterocyclic compounds with nitrogen hetero-atom(s) only : Lactams : Other lactams

What duty rates apply to 293379?

Listed US duty: 0%–6.5% (US general rate, HTS 2026).