197502-82-2 198470-85-8 N-((4-(5-Methyl-3-phenyl-4-isoxazolyl)phenyl)sulfonyl)propanamide sodium salt Parecoxib sodium Propanamide, N-((4-(5-methyl-3-phenyl-4-isoxazolyl)phenyl)sulfonyl)-, sodium salt SC 69124A