3-Methylbutyric Acid (Isovaleric Acid) from Mexico
Isovaleric acid (3-methylbutanoic acid) is a saturated acyclic branched C5 monocarboxylic acid with strong cheesy odor, used in flavors and biochemical research. Classified HTS 2915.90.18.90 as other saturated acyclic monocarboxylic acids.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6095.8%Pharmaceuticals Annex IV: patented pharma articles — 100% 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
• Declare odor characteristics and FEMA# 3096 for flavor use
• Ventilated packaging required due to strong volatile odor