Syringic Acid from China
Syringic acid (4-hydroxy-3,5-dimethoxybenzoic acid) contains one phenolic OH and two methoxy groups. Classified HTS 2918.19.20.00 under additional U.S. note 3. Lignin degradation product used in antioxidants and material science.
Duty Rate — China → United States
26.5%
Rate breakdown
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Multiple methoxy groups don't affect primary alcohol function classification
• Bio-derived from lignin; source documentation prevents natural extract confusion
• Polymer intermediate; declare intended use to avoid chemical preparation status