Mesoridazine Besylate from Mexico
Mesoridazine besylate, a metabolite of thioridazine, is a phenothiazine tranquilizer used for psychiatric disorders. Falls under HTS 2934.30.23.00 as a psychotherapeutic agent with defined phenothiazine structure. Supplied as sterile API for injectable and oral formulations.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals: 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
• Test for total microbial count <100 CFU/g and absence of pathogens per USP <61>/<62>
• Provide salt stoichiometry documentation (besylate vs hydrochloride) for accurate molecular weight declaration
• Use nitrogen-flushed, light-protected packaging to maintain potency during ocean transit