Cyclomethylcaine from Mexico
Cyclomethylcaine is a lesser-known local anesthetic used in dermatological creams for surface analgesia. It meets HTS 2922.50.1700 criteria as an aromatic amino-oxygen function compound serving as a dermatological agent. Typically handled as a bulk active pharmaceutical ingredient.
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
• Reference PubChem/CAS registry in import docs for unambiguous chemical identification
• Limit impurities to those not altering classification per Chapter Note (a)
• Consult CBP for advance ruling if structural ambiguity exists with alternatives