tert-butyl 2-trimethylsilylbut-2-enoate

1,1,1-tris(methylsulfanyl)propan-2-ol

1-dimethoxyphosphorylethyl propanoate

4-O-(1-dimethoxyphosphorylethyl) 1-O-methyl butanedioate

4-O-(1-diethoxyphosphorylethyl) 1-O-ethyl butanedioate