英文别名Etoricoxib Impurity 29; 2-(4-(methylsulfonyl)phenyl)-1-morpholinoethanone; Ethanone, 2-[4-(methylsulfonyl)phenyl]-1-(4-morpholinyl)-; Etoricoxib Impurity Z11; Etoracoxime 53; 2-(4-(Methylsulfonyl)phenyl)-1-morpholinoethan-1-one; Etoricoxib Impurity 36 
