trimethylsilyl 2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxyacetate;trimethylsilyl 2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxy-acetate;2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxyacetic acid trimethylsilyl ester;2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxy-acetic acid trimethylsilyl ester;trimethylsilyl 2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxy-ethanoate;3,4-Dihydroxymadelic acid (tms);Benzeneacetic acid, .alpha.,3,4-tris[(trimethylsilyl)oxy]-, trimethylsilyl ester
trimethylsilyl 2-[3,4-bis(trimethylsilyloxy)phenyl]-2-trimethylsilyloxyacetate