Indole-3-Butyric Acid from Japan
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 — Japan → United States
15%
Rate breakdown
9903.04.6215%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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