Aminaphtone API from Japan
Aminaphtone is a pyrazole derivative used for capillary fragility treatment in vascular disorders. Features 4-amino-3-methyl-1-phenylpyrazol-5-one structure qualifying under HTS 2933.19.4500. Pharmaceutical grade for tablet manufacturing.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include vascular drug clinical trial data and bioavailability studies in import dossier
• Verify phenylpyrazolone identity via melting point (157-160°C) and TLC profiling
• Declare as human drug to access .4500; research chemical status shifts classification