Papaverine Hydrochloride from China
Papaverine hydrochloride is an opium alkaloid salt used as a smooth muscle relaxant. Falls under HTS 2939.19.5000 as an unspecified opium alkaloid derivative salt, per chapter notes on organic salts classification.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
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
• Include stability data and storage requirements in shipping documents for temperature-sensitive APIs
• Cross-check against DEA quotas for legitimate medical use quantities
• Use tamper-evident packaging to meet controlled substance transport security standards