Clonazepam API from Japan
Clonazepam, a nitrobenzodiazepine anticonvulsant, contains fused heterocyclic rings with nitrogen hetero-atoms only. Primarily used for seizure disorders and panic attacks via CNS depression. Bulk powder form for drug manufacturing classified here as aromatic CNS drug.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide comprehensive impurity profile; secure advance DEA authorization; label clearly as Bulk Drug Substance to maintain Chapter 29 classification