Biligrafin Acid Pharmaceutical Grade Powder from Mexico
High-purity biligrafin acid powder meets USP standards for synthesis of gallbladder contrast agents. Explicitly under HTS 2924.29.0500 as a named aromatic amide derivative, fitting chapter 29 for chemically defined organic compounds without impurities affecting classification.
Duty Rate — Mexico → United States
15.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Require GMP or USP certificates; declare exact CAS (98-30-6 equivalent) to prevent reclassification
• Pitfall: bulk vs retail packing shifts to chapter 30