31972-44-8 BAY 68138 SULFONE Ethyl 4-(methylsulfonyl)-m-tolyl isopropylphosphoramidate Fenamiphos sulfone Fenamiphos sulfphone Phosphoramidic acid, (1-methylethyl)-, ethyl 3-methyl-4-(methylsulfonyl)phenyl ester Phosphoramidic acid, isopropyl-, ethyl 4-(methylsulfonyl)-m-tolyl ester