4-Hydroxycoumarin from Japan
4-Hydroxycoumarin, a hydroxylated benzopyrone heterocyclic with oxygen hetero-atoms only, aromatic. Falls under HTS 2932.99.35.00 as other specified aromatic oxygen-heterocyclics matching chapter scope. Precursor for anticoagulant synthesis.
Duty Rate — Japan → 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
• Strict DEA watch-list monitoring for warfarin precursors; extra documentation needed
• Verify no anticoagulant activity claims to avoid 2937 hormone classification