Sulfaguanidine Crystals from China
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 — China → United States
100%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
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