Guaiacol Carbonate from Japan
Guaiacol carbonate is a derivative formed by esterification of guaiacol, used historically as an antitussive agent in respiratory medications. As a chemically defined derivative of guaiacol (ether-phenol), it qualifies under HTS 2909.50.20.00. Imported primarily for pharmaceutical intermediate production.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include structural formula and CAS number (10197-20-0) on commercial invoice to confirm derivative status under guaiacol heading
• Verify no halogenation or sulfonation that might shift classification to earlier derivative subheadings per chapter notes
• Obtain prior FDA notification if destined for drug manufacturing to avoid customs holds on pharmaceutical precursors