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4-Hydroxycoumarin from Canada

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 — Canada → United States

16.5%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Strict DEA watch-list monitoring for warfarin precursors; extra documentation needed

Verify no anticoagulant activity claims to avoid 2937 hormone classification

4-Hydroxycoumarin from Canada — Import Duty Rate | HTS 2932.99.35.00