Cysteine Hydrochloride Anhydrous USP Grade from China
Cysteine hydrochloride anhydrous USP grade is a high-purity, water-free salt of cysteine meeting United States Pharmacopeia standards, with the defining C-S bond. It is specifically enumerated under HTS 2930.90.92.10 as cysteine hydrochloride, an organo-sulfur compound. Primarily imported for pharmaceutical manufacturing and dietary supplements.
Duty Rate — China → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include USP certificate of analysis proving ≥98% purity to confirm 'chemically defined' status
• Declare anhydrous form explicitly; mislabeling as monohydrate risks audit
• For pharma imports, file with FDA and ensure DMF (Drug Master File) availability