Butyrylfentanyl from Mexico
Butyrylfentanyl is an N-butyryl analog of fentanyl, a derivative captured by HTS 2934.92.00.00 for other fentanyls. It is a separate chemically defined compound per chapter note 1(a).
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%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
• Declare as research chemical only; comply with Chemical Convention treaties
• Pitfall: Lack of batch CoA causes FDA refusal