英文别名Etoricoxib Impurity 11; Etoricoxib Impurity 18; Etoricoxib Impurity YY; Etoricoxib impurity 12; 1-(6-Methyl-1-oxido-3-pyridinyl)-2-[4-(methylsulfonyl)phenyl]ethanone; Ethanone, 1-(6-methyl-1-oxido-3-pyridinyl)-2-[4-(methylsulfonyl)phenyl]-; Etoricoxib Impurity R; 1-(6-methyl-1-oxidopyridin-1-ium-3-yl)-2-(4-methylsulfonylphenyl)ethanone 
