2939.19.10.00/Papaverine Hydrochloride USP/Mexico

Papaverine Hydrochloride USP from Mexico

Papaverine hydrochloride is the salt form of papaverine, a benzylisoquinoline alkaloid derived from opium, used primarily as a smooth muscle relaxant in pharmaceutical applications. It falls under HTS 2939.19.10.00 as a salt of the opium alkaloid papaverine, consistent with chapter notes specifying alkaloids and their salts. This pure chemical compound is supplied as a white crystalline powder for compounding into injectables or oral medications.

Duty Rate — Mexico → United States

100%

Rate breakdown

9903.04.60100%Pharmaceuticals Annex IV: 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)

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Import Tips

• Verify USP or EP pharmacopeia grade certification and provide Certificate of Analysis (CoA) confirming purity >98% to avoid reclassification as impure mixtures

• Include FDA Drug Master File (DMF) references and ensure INN compliance for papaverine hydrochloride; declare as bulk API not finished dosage forms