DL-Homophenylalanine from Mexico
DL-Homophenylalanine is a phenylalanine homolog with extended carbon chain, classified under HTS 2922.49.37.00 as an other aromatic amino-acid. The single oxygen-function carboxyl group qualifies it for this oxygen-function amino-compound heading. Used in peptide synthesis and pharmaceutical research.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%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 comparative structural data vs. phenylalanine to justify 2922 classification over acyclic hydrocarbons
• Ensure COA specifies enantiomeric ratio if not fully racemic; pure enantiomers may trigger different pharma regs