515-54-8 Benzenesulfonamide, 4-hydroxy-N-2-thiazolyl- (9CI) Benzenesulfonamide, p-hydroxy-N-2-thiazolyl- (8CI) Darvisul N-(2-Thiazolyl)-p-phenolsulfonamide NSC 27250 Phenolsulfazole Phenolsulfon Phenolsulphazole Phenosulfazole Virazene