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2(3H)-Furanone Dihydro from Canada

Dihydro-2(3H)-furanone (gamma-butyrolactone alternative name) is a five-membered lactone oxygen heterocycle under HTS 2932.99.70.00. Pharmaceutical intermediate and solvent.

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

Pharma intermediate; Drug Master File (DMF) reference recommended

Lactone ring opening sensitivity; purity >99.5% typically required

Controlled precursor monitoring for some applications