(R)-α-Amino-4-Hydroxybenzene Acetic Acid (D-(-)-p-Hydroxyphenyl Glycine) from Mexico
Chiral aromatic amino acid featuring hydroxy and carboxylic acid oxygen functions, explicitly listed under HTS 2922.50.0700. Pharmaceutical intermediate for synthesis of antibiotics like amoxicillin.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.60100%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
• Specify optical rotation [α]D and enantiomeric excess (>99% D-form) in COA for classification confirmation
• DMF filing required for pharma intermediates; include end-use statement
• Hygroscopic; import in desiccated packaging to maintain crystal form