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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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