Guaiacol USP Grade from Canada
Guaiacol is a naturally occurring organic compound classified as an ether-phenol, used primarily as an expectorant in cough syrups and as a chemical intermediate. It falls under HTS 2909.50.4500 as a chemically defined ether-phenol product listed in additional U.S. note 3 to section VI. This monomethoxy phenol derivative is essential in pharmaceutical and flavor applications.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6094.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify USP grade certification and provide detailed chemical analysis (COA) to confirm classification under additional U.S. note 3
• Ensure proper labeling with CAS number (90-05-1) and purity percentage to avoid reclassification as a mixture
• Obtain FDA prior notice for pharmaceutical-grade imports and check REACH compliance for EU-sourced material