4-Hydroxycoumarin USP Grade from Japan
USP-grade 4-Hydroxycoumarin meets pharmacopeia standards for research and synthesis. It is classified under HTS 2932.20.2500 as the pure aromatic lactone heterocyclic compound.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide USP/EP certificates of analysis; segregate from technical grades
• Watch for dual-use export controls if rodenticide precursor