英文别名Parecoxib Sodium Impurity 51; Valdecoxib 3'-Sulfonamide Impurity; 3-(5-methyl-4-phenyl-1,2-oxazol-3-yl)benzenesulfonamide; Valdecoxib 3'-sulfonamide; Parecoxib sodium Impurity 9; Valdecoxib Disulfonamide Impurity; Parecoxib Sodium Impurity M; 3-(5-Methyl-4-phenyl-3-isoxazolyl)benzenesulfonamide; Benzenesulfonamide, 3-(5-methyl-4-phenyl-3-isoxazolyl)- 
