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HS 2933 — Heterocyclic compounds with nitrogen hetero-atom(s) only

HS heading 2933 (Heterocyclic compounds with nitrogen hetero-atom(s) only) spans 14 products in U.S. import records, with 79,860 bill-of-lading shipments. The most imported are Heterocyclic compounds with nitrogen hetero-atom(s) only, other, 6-Hexanelactam (ε-Caprolactam), and Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine.

Part of Chapter 29: Organic chemicals

Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/heading/2933

Products under this heading

HSProductShipments
293399Heterocyclic compounds with nitrogen hetero-atom(s) only, other24,778
2933716-Hexanelactam (ε-Caprolactam)8,711
293361Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, melamine8,390
293379Lactams, other lactams8,179
293319Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, other7,141
293369Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure, other6,714
293339Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure, other6,540
293359Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, other3,473
293391Alprazolam (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)2,713
293349Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, other1,796
293329Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure, other518
293331Pyridine and its salts509
293372Clobazam (INN) and methyprylon (INN)208
293321Hydantoin and its derivatives190

Frequently asked questions about HS 2933

What is HS code 2933?

HS 2933 covers heterocyclic compounds with nitrogen hetero-atom only. It is a 4-digit heading in chapter 29 (Organic chemicals) of the Harmonized System, with 14 six-digit subheadings that appear in U.S. import records.

How many U.S. import shipments fall under HS 2933?

ImportDoor has 79,860 U.S. Customs bill-of-lading shipment records under HS heading 2933, updated monthly.

What is the most imported product under HS 2933?

Heterocyclic compounds with nitrogen hetero-atom only (HS 293399) leads with 24,778 shipments, followed by 6-Hexanelactam (HS 293371) and Compounds containing an unfused triazine ring in the structure, melamine (HS 293361).