Vinbarbital from Mexico
Vinbarbital, a methylated barbituric acid derivative with sedative properties. Falls under HTS 2933.54.00.00 as a derivative of malonylurea per the pyrimidine ring classification.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%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
9903.05.5510%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
• Rare compound; provide literature references for identification
• Customs may require additional chemical structure validation
• Limited commercial availability increases scrutiny