diethyl methylthio(phenyl)methylphosphonate
diethyl 2,4-dimethoxyphenyl(methylthio)methylphosphonate
diethyl 4-methylphenyl(methylthio)methylphosphonate
diethyl 2-methylphenyl(methylthio)methylphosphonate
diethyl 4-methoxyphenyl(methylthio)methylphosphonate