Biligrafin Acid Pharmaceutical Grade Powder from Canada
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 — Canada → United States
15.3%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 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