Benzofuran-2(3H)-one from Canada
Benzofuran-2(3H)-one is a fused benzene-pyrrolidone lactone system classified as aromatic heterocyclic lactone under HTS 2932.20.4500. Used in pharmaceutical and polymer synthesis.
Duty Rate — Canada → United States
16.5%
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
• Provide CAS number (87-41-2) and IUPAC name verification on commercial invoice
• Declare research/chemical synthesis end-use to avoid medicinal preparation scrutiny
• Ensure solvent content <5% to qualify under Chapter note (e) transport exceptions