Indole-3-Propionic Acid from Japan
Indole-3-propionic acid features a three-carbon carboxylic acid chain, under HTS 2933.99.0500 due to indole structure precedence. Used as neurotransmitter precursor and antioxidant.
Duty Rate — Japan → United States
27.5%
Rate breakdown
9903.04.6215%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
• Chain length variation doesn't affect indole classification
• Water-soluble; verify dry powder vs solution form on import
• Growing nutraceutical use; pure chemical stays Chapter 29