DL-2-Hydroxy-4-(Methylthio)butyric Acid from Canada
This is the DL-hydroxy analogue of DL-methionine, a chemically defined organo-sulfur compound with a hydroxy group replacing the amino group. It falls under HTS 2930.90.46.00 as an acid within the organo-sulfur compounds heading, used primarily as a feed additive. The product is supplied as a white crystalline powder for animal nutrition.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify purity certificates to confirm it meets the chemical definition under Chapter 29 notes; ensure FDA prior notice for animal feed use
• Common pitfall: misclassifying as a finished feed product