Butyrylfentanyl from Japan
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 — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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