Protocatechuic Acid from Germany
Protocatechuic acid (3,4-dihydroxybenzoic acid) features adjacent hydroxyl groups ortho to each other on the benzene ring. Included in HTS 2028.19.20.00 per U.S. note 3 as aromatic carboxylic acid with alcohol function. Used in antioxidants and biochemical research.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Catechol structure (ortho-dihydroxy); distinguish from resorcinol types
• Often plant-derived; provide extraction method to avoid natural product reclassification
• Research chemical imports need end-user statements for DEA watchlist monitoring