Ritodrine Hydrochloride from Canada
Ritodrine hydrochloride, a tocolytic agent with unfused thiazole ring, classified under HTS 2934.10.10.00. Used in pharmaceutical production for preterm labor treatment.
Duty Rate — Canada → 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
• Provide stability data for hydrochloride salt form; temperature-controlled shipping required
• Include pharmacopeial compliance (BP/USP) and impurity profile per ICH Q3A
• Declare therapeutic classification on commercial invoice for FDA import alert screening