Warfarin Sodium
Warfarin sodium is an aromatic lactone derivative used as an anticoagulant drug to prevent blood clots. It falls under HTS 2932.20.20.00 as an aromatic lactone classified as a drug, containing oxygen hetero-atoms in a heterocyclic structure. This synthetic coumarin-based compound is chemically defined and meets Chapter 29 requirements for pharmaceutical lactones.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If non-aromatic lactone structure
Non-aromatic lactones remain under 2932.29 but lose the aromatic drug specification of 2932.20.20.00
If formulated as finished dosage form like tablets
Medicaments in dosage form move to Chapter 30 regardless of chemical structure; pure API stays in Chapter 29
If used as pesticide rather than pharmaceutical drug
Same chemical structure but different end-use as rodenticide classifies under non-drug aromatic lactones
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Import Tips & Compliance
• Obtain FDA Drug Master File and import permit prior to shipment; ensure compliance with 21 CFR pharmaceutical labeling
• Provide Certificate of Analysis confirming ≥98% purity and absence of impurities exceeding ICH guidelines
• Avoid misclassification as veterinary use product which may fall under different regulations; declare specifically as human drug
Related Products under HTS 2932.20.20.00
Dicumarol
Dicumarol is a naturally-derived aromatic lactone anticoagulant originally isolated from spoiled sweet clover. Classified under HTS 2932.20.20.00 as an aromatic lactone drug with oxygen-containing heterocyclic ring. Used historically for thrombosis treatment before synthetic alternatives.
Aflatoxin B1 Standard
Aflatoxin B1 is a highly toxic aromatic lactone mycotoxin used as analytical standard for food safety testing. Falls under HTS 2932.20.20.00 as an aromatic lactone with recognized pharmaceutical reference applications. The difurocoumarin structure contains oxygen hetero-atoms in fused heterocyclic rings.
Senecionine
Senecionine is an aromatic otonecine-class pyrrolizidine lactone alkaloid used in toxicology research. Classified under HTS 2932.20.20.00 due to its oxygen-containing heterocyclic lactone structure and pharmaceutical research applications. Isolated from Senecio plants as reference hepatotoxin standard.
Alizarin
Alizarin is a red anthraquinone derivative containing aromatic lactone functionality used in pharmaceutical staining. Falls under HTS 2932.20.20.00 as aromatic oxygen-heterocycle with drug applications in histology. Historically significant as first synthetic dye with medicinal uses.
Patulin Reference Standard
Patulin is a toxic aromatic lactone mycotoxin produced by Penicillium fungi, used as analytical standard. HTS 2932.20.20.00 covers this oxygen-heterocyclic drug reference due to its pharmaceutical toxicology applications. Regulated for juice and food safety testing.