Thioridazine Hydrochloride from Mexico
Thioridazine hydrochloride, a piperidine phenothiazine, treats schizophrenia with antipsychotic properties. The unfused phenothiazine ring-system defines its placement in HTS 2934.30.5000 as other such heterocyclic compounds.
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
• Comply with DEA schedules for phenothiazine imports; maintain chain-of-custody records
• Declare salt form explicitly with molecular formula to match heading notes on salts (note 3(C))
• Avoid misclassification by providing NMR spectra confirming ring structure