Sulfaguanidine Crystals from Canada
Sulfaguanidine, sparingly soluble for local gut action, treats bacillary dysentery and pre-surgical bowel prep. Classifies HTS 2935.90.4800 as sulfonamide anti-infective meeting Chapter 29(a) chemically defined compound criteria. Guanidine substitution provides unique solubility profile.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Solubility <0.1mg/ml documentation distinguishes from systemic sulfonamides
• Crystal habit analysis prevents polymorphic purity issues
• Historical use documentation supports continued drug status