Mustargen API (Chlormethine Base) from Mexico
Mustargen active pharmaceutical ingredient is pure chlormethine (bis(2-chloroethyl)methylamine), an acyclic monoamine and nitrogen mustard under HTS 2921.19.61.30. Used as intermediate for anticancer drug synthesis. Classified here as separate chemically defined compound per Chapter 29 note (a).
Duty Rate — Mexico → 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
• Obtain prior FDA import alert clearance for nitrogen mustards; include CoA showing >98% purity
• Label as research chemical to avoid drug classification
• Monitor REACH-like regs if transshipping from EU