2932.20.25.00/Warfarin Sodium Precursor (4-Hydroxycoumarin Base)/Mexico

Warfarin Sodium Precursor (4-Hydroxycoumarin Base) from Mexico

4-Hydroxycoumarin base used to synthesize warfarin sodium, a pharmaceutical anticoagulant. Classified in HTS 2932.20.2500 for its specific aromatic lactone structure per subheading.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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Import Tips

• Include DMF reference for pharma use; test for heavy metals per USP

• Pitfall: pharma intermediates sometimes misentered under 2940