185147-17-5 2(3H)-furanone, dihydro-5-hydroxy-4-[4-(methylsulfonyl)phenyl]-3-phenyl- 2(5H)-Furanone, 5-hydroxy-4-[4-(methylsulfonyl)phenyl]-3-phenyl- (9CI) 5-OH-rofecoxib 5-hydroxyrofecoxib