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N-[(4S,6S)-6-methyl-7,7-dioxo-2-sulfamoyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl]acetamide; CAS No.: 147200-03-1; ChemShuttle specializes in heterocycles such as this thienothiopyran acetamide derivative, featuring a 4S,6S-configured bicyclic system with dual sulfonamide pharmacophores. As a worldwide chemical supplier, we provide stereochemically complex sulfonamide derivatives for carbonic anhydrase inhibitor research. The 7,7-dioxide moiety and N-acetyl group enhance water solubility while maintaining isoform selectivity. Our synthesis employs asymmetric Pictet-Spengler cyclization to achieve precise stereocontrol, supporting development of glaucoma therapeutics with reduced ocular pressure side effects.