</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Isocamphoric Acid from Mexico

Isocamphoric acid is a stereoisomer of camphoric acid used in resolution of racemates. Classified under HTS 2916.20.50.00 as other cyclanic monocarboxylic acid per chapter isomer rules.

Duty Rate — Mexico → United States

100%

Rate breakdown

9903.04.6096.3%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

Specify optical rotation in documentation; enantiopure forms have different regulatory status; batch purity certificates mandatory