Sulfamethazine Base Powder USP from Canada
Pharmaceutical grade sulfamethazine base powder meeting USP standards for purity, used in compounding veterinary medications against respiratory and enteric bacterial infections in swine and cattle. Classified under HTS 2935.90.30.00 as the specific sulfonamide anti-infective agent sulfamethazine per Chapter 29 notes for separate chemically defined compounds. Typically imported in 25kg drums for further formulation.
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 FDA Drug Master File reference and third-party lab testing for identity/potency; use tamper-evident packaging to prevent contamination claims at customs
• Avoid common error: declaring without CAS number (57-68-1), causing delays in verification