acetoxymethyl glycolate

acetyloxymethyl 2-chloro-2-oxoacetate

acetoxymethyl oxalic acid

acetoxymethyl 2-((2R,3S)-2-((3-(carbamoyloxy)prop-1-en-2-yl)thio)-4-oxo-3-((R)-1-(((2,2,2-trichloroethoxy)carbonyl)oxy)ethyl)azetidin-1-yl)-3-methylbut-2-enoate

acetoxymethyl 2-((2R,3S)-2-((2-(carbamoyloxy)acetyl)thio)-4-oxo-3-((R)-1-((trimethylsilyl)oxy)ethyl)azetidin-1-yl)-2-oxoacetate