Rizatriptan Benzoate API from Canada
Rizatriptan benzoate is the active ingredient in Maxalt for migraine treatment, featuring a pyrazole ring in its structure. Classified under HTS 2933.19.4500 as a drug containing unfused pyrazole ring per Chapter 29 notes. Used primarily as a serotonin receptor agonist in pharmaceutical manufacturing.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6096.3%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
• Submit FDA IND/NDA references and stability data; ensure benzoate salt form matches US pharmacopeia specs
• Label shipments clearly as 'API - Not for Direct Human Use' to avoid Chapter 30 finished product classification
• Verify chiral purity documentation as pyrazole derivatives often require specific stereoisomer certificates