p-Coumaric Acid Research Grade from Japan
p-Coumaric acid (4-hydroxycinnamic acid), a key hydroxycinnamic acid, is classified under HTS 2918.29.2000 matching the heading's specific naming. High-purity research grade for lab use in antioxidant studies.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include NMR spectrum confirming trans-isomer (E)-configuration, CAS 7400-08-0
• Small quantities (<1kg) need lab chemical declaration; avoid consumer packaging
• Test for heavy metals (<20ppm) per research chemical standards