Sulfathiazole USP Reference Standard from Canada
Certified reference material of sulfathiazole USP for analytical laboratory testing and quality control in pharmaceutical manufacturing. Classifies under HTS 2935.90.3300 as the named sulfonamide anti-infective even when used as standard. Provided in small quantities with CoA verifying identity and purity.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.60100%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
• Include USP certificate and intended use documentation to justify reference standard status
• Package in child-resistant containers if quantity exceeds lab use thresholds
• Declare exact quantity and purity to avoid scrutiny as commercial drug quantities