Captopril from Japan
Captopril, (2S)-1-[(2S)-3-mercapto-2-methylpropionyl]-L-proline, contains a mercaptocarboxylic acid side chain. Despite complex structure, classified under HTS 2930.90.4920 as its mercapto acid functionality defines the organo-sulfur nature per Chapter 29. Pharmaceutical API for hypertension treatment.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.6210.8%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
• FDA DMF and USP certificate mandatory; verify chiral purity >99.5% ee
• Controlled substance precursor monitoring; DEA import permit may apply
• Classify bulk API only; tablets move to Chapter 30 pharmaceuticals