英文别名Valdecoxib Dimer; 4-(5-methyl-3-phenylisoxazol-4-yl)-N-((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)benzenesulfonamide; N-[4-(5-Methyl-3-phenyl-4-isoxazolyl)benzenesulfonyl]-4-(5-Methyl-3-phenyl-4-isoxazolyl)benzenesulfonamide; Valdecoxib Impurity-B(valdecoxib Dimer); Benzenesulfonamide, 4-(5-Methyl-3-phenyl-4-isoxazolyl)-N-[[4-(5-Methyl-3-phenyl-4-isoxazolyl)phenyl]sulfonyl]-; Parecoxib Sodium Impurity 13 
