diethyl 2-((ethylsulfinyl)(ethylthio)methylene)malonate

undecane-1,1,11-tricarboxylic acid-1,1-diethyl ester-11-methyl ester

(4S)-ethyl tetrahydro-4-isobutyl-2-oxofuran-3-carboxylate

diethyl 2-(3-(4-bromophenyl)-3-oxo-1-phenylpropyl)malonate

ethyl 6-(2-furyl)-3-oxo-2,3,4,5-tetrahydropyridazine-4-carboxylate