DL-Methionine from China
DL-Methionine is a synthetic racemic amino acid with a thioether side chain but classified here due to its amino-carboxylic acid structure under HTS 2922.49.4950. Primarily used as an essential amino acid supplement in animal feed and human nutrition.
Duty Rate — China → United States
29.2%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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 AAFCO certification for animal feed grade to meet agricultural import requirements
• Declare exact DL vs L-form ratio as racemic forms have different bioavailability claims
• Ensure sulfur content <0.5% impurities to avoid hazardous material declarations