Mercaptopurine from Japan
Mercaptopurine is a purine antimetabolite with thiopurine heterocyclic structure used in leukemia chemotherapy. Classified under HTS 2934.99.30.00 as an aromatic heterocyclic drug due to its pharmaceutical anticancer applications.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide TPMT genotyping information relevance for patient safety in import documentation
• Include photostability data and amber packaging requirements for light-sensitive imports
• Certify anhydrous form specification as hydrate forms have different solubility profiles