Pharmaceutical Grade Levorphanol Base from China
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 — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Require GMP manufacturing proof and stereoisomer confirmation (levo-specific); use tamper-evident pharma packaging
• Coordinate with US importer's DEA registration number