N-Acetyl-DL-tryptophan from Mexico
N-Acetyl-DL-tryptophan is an acetylated derivative of the amino acid tryptophan, classified under HTS 2942.00.50.00 as an 'other' organic compound. This synthetic amino acid derivative features both amine and carboxylic acid functions with an indole ring, falling outside specific amino acid headings.
Duty Rate — Mexico → 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 spectroscopic data (NMR, MS) to verify chemical structure and stereochemistry during customs review
• Declare exact enantiomeric composition (DL vs L-form) to prevent reclassification under amino acid headings
• Check REACH compliance if transshipping through EU for chemical safety documentation