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
112.5%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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