Indole-3-Acetic Acid from Mexico
Indole-3-acetic acid (auxin) is a plant growth regulator with carboxylic acid function on the indole core, classified under HTS 2933.99.0500 as an indole derivative. The heterocyclic structure takes precedence over the acid function per Chapter 29 notes.
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
• Carboxylic acid function subordinate to named heterocycle per Chapter 29 note on function precedence
• Include EPA registration if marketed as pesticide; technical grade stays in Chapter 29