7-Dehydrocholesterol (Provitamin D3) from Mexico
7-Dehydrocholesterol serves as the provitamin precursor to Vitamin D3, converted by UV light, used primarily in vitamin synthesis. HTS 2936.29.50.20 includes provitamins and Vitamin D derivatives as chemically defined organic compounds. Bulk precursor for supplement manufacturing.
Duty Rate — Mexico → United States
100%
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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• UV stability testing documentation prevents reclassification as unstable mixture
• Declare conversion efficiency data supporting provitamin status