Isosafrole USP Grade from Japan
Pharmaceutical-grade isosafrole meeting USP standards for purity, used as an intermediate in synthesizing piperonal derivatives and other API precursors. Classified under HTS 2932.91.00.00 due to its specific chemical identity as a heterocyclic oxygen compound despite pharmaceutical end-use intent. Supplied in amber glass bottles with stabilizers only for transport safety.
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 USP Certificate of Analysis showing >99% purity to avoid reclassification as a mixture
• Declare intended pharmaceutical intermediate use but note Chapter 29 takes precedence over Chapter 30 exclusions
• Ensure stabilizers qualify under Chapter Note (f) as necessary for preservation/transport only