Firocoxib189954-96-9100 % similar Rofecoxib162011-90-741 % similar 1-[4-(Methylsulfonyl)phenyl]ethanone10297-73-137 % similar 4-(Methylsulfonyl)benzoic acid4052-30-637 % similar 4-(Methylsulfonyl)phenylacetic acid90536-66-632 % similar 4-Fluorophenyl methyl sulfone455-15-232 % similar 1-(6-Methylpyridin-3-yl)-2-[4-(methylsulfonyl)phenyl]ethanone221615-75-431 % similar Methyl P-tolyl sulfone3185-99-730 % similar