Isobucaine from Mexico
Isobucaine serves as a surface anesthetic in skin treatment products. Classified HTS 2922.50.1700 for aromatic amino-oxygen function as dermatological local anesthetic.
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
• Ensure chemical definition per chapter notes
• Avoid retail packing pitfalls