Carbostyril (4-Quinolone Derivative) from Mexico
Carbostyril derivatives serve as intermediates for aromatic amide drugs like fluoroquinolones. Classified under HTS 2924.29.62.50 as 'other' aromatic cyclic amides used in pharmaceuticals. Structure contains fused cyclic amide ring per chapter 29 specifications.
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
• Register as Type II DMF for intermediates
• Declare synthetic route to avoid dual-use scrutiny