5-((Acetyl)(ethoxycarbonyl)methylenamino)-4,5-dihydro-2,5-dimethyl-4-phenyl-3-furancarbonsaeure-ethylester

2-(methylsulfanyl-methyl)-acetoacetic acid ethyl ester

ethyl 3-((3-chloro-2-methylphenyl)amino)but-2-enoate

(+/-)-2-octyl acetoacetate

ethyl 3-(4-bromoanilino)propenoate