5-chloro-3-(2-chlorophenyl)-1,2-oxazole-4-carbaldehyde

5-chloro-3-(4-chlorophenyl)-1,2-oxazole-4-carbaldehyde

5-chloro-3-[4-(trifluoromethyl)phenyl]-1,2-oxazole-4-carbaldehyde

5-chloro-3-(3,5-difluorophenyl)-1,2-oxazole-4-carbaldehyde

3-(3-bromophenyl)-6-chloropyridazine

3-chloro-6-(2-methoxyphenyl)pyridazine

3-(3-nitrophenyl)-6-(piperazin-1-yl)pyridazine

3-(4-methylphenyl)-6-(piperazin-1-yl)pyridazine

ethyl 4-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxobutanoate

ethyl 4-(2,5-dimethoxyphenyl)-2,4-dioxobutanoate