Cysteine Hydrochloride Monohydrate from Mexico
L-Cysteine hydrochloride monohydrate is the hydrochloride salt of an organo-sulfur amino acid classified under HTS 2930.90.4950 per Chapter 29 note 4(C)(1). The organic acid-function compound determines classification; sulfur directly linked to carbon. Used as dough conditioner and nutritional supplement.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6095.8%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide optical rotation data confirming L-form for food grade certification
• Include salt formation documentation per Chapter 29 note 4(C)(1) salt classification rules
• Ensure GMP certification for food contact applications