4-Hydroxycoumarin USP Grade from China
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 — China → United States
16.5%
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
• Provide USP/EP certificates of analysis; segregate from technical grades
• Watch for dual-use export controls if rodenticide precursor