The chemical Valdecoxib has a designated molecular formula of C16H14N2O3S and a molecular weight of 314.359 g/mol. Synonyms may include: SC 65872, Bextra, 4-(5-Methyl-3-phenyl-4-isoxazolyl)benzenesulfonamide, HSDB 7302, UNII-2919279Q3W (ChemID). Valdecoxib has been assigned a MeSH pharmacological action of: Cyclooxygenase 2 Inhibitor.