ethyl 2-acetyl-2-(prop-2-ynyl)pent-4-ynoate

6-Chloro-4-phenyl-3-quinolinecarboxylic acid ethyl ester

2-(3-chloropropyl)-acetoacetic acid ethyl ester

ethyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-methylbutanamido)-3-oxobutanoate

ethyl 6-methyl-4-(3-nitrophenyl)-2-phenyl-5-pyrimidinecarboxylate