DL-Methionine from Mexico
DL-Methionine is a synthetic racemic mixture of D- and L-methionine, a chemically defined organo-sulfur amino acid essential for animal nutrition. It falls under HTS 2930.40.00.00 as methionine, used primarily as a feed additive to supplement methionine-deficient diets in poultry and swine.
Duty Rate — Mexico → United States
10%
Rate breakdown
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
• Verify purity certificate (typically 99%+) and CAS number 59-51-8 for customs clearance; ensure COA specifies DL-form to avoid misclassification; common pitfall is contamination claims—use sealed, moisture-proof packaging