Remifentanil Hydrochloride from Mexico
Remifentanil hydrochloride is an ester-based ultra-short-acting fentanyl derivative for anesthesia, under HTS 2934.92.00.00. It qualifies as a heterocyclic compound per chapter notes on esters classified by parent structure.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%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
• Submit annual import quotas to DEA; use GMP-certified suppliers
• Pitfall: Ester instability requires validated cold chain documentation