Isosafrole USP Grade from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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