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
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Declare as research chemical only; comply with Chemical Convention treaties
• Pitfall: Lack of batch CoA causes FDA refusal