Indole-3-Butyric Acid from Mexico
Indole-3-butyric acid is a synthetic auxin with a four-carbon carboxylic acid chain on indole, under HTS 2933.99.0500 due to indole precedence. Widely used in plant propagation and rooting hormones.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Longer chain acids still classified with parent indole structure
• Often imported as potassium salt; classify with base per Chapter 29 note 3(C)
• EPA pesticide registration mandatory if >technical grade concentration