Pharmaceutical Grade Levorphanol Base from Mexico
Pure levorphanol (base form, INN) is the parent morphinan opioid with quinoline ring system, imported at >99% purity for salt formation. Falls under HTS 2933.41.00.00 covering both the INN compound and its salts as chemically defined heterocyclics. Used exclusively as active pharmaceutical ingredient precursor.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% 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
• Require GMP manufacturing proof and stereoisomer confirmation (levo-specific); use tamper-evident pharma packaging
• Coordinate with US importer's DEA registration number