Guaiacol USP Grade from China
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 — China → United States
137.5%
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
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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