3-methyl-1-(3-nitrobenzoyl)piperazine

1-(4-tert-butylbenzoyl)-3-methylpiperazine

1-[3,5-bis(trifluoromethyl)benzoyl]-3-methylpiperazine

1-(4-methoxybenzoyl)-2-methylpiperazine

1-{[1,1'-biphenyl]-4-carbonyl}-2-methylpiperazine

1-(2-methylpiperazin-1-yl)nonan-1-one

ethyl (2Z)-2-chloro-2-[2-(2-chloro-4-nitrophenyl)hydrazin-1-ylidene]acetate

ethyl (2Z)-2-chloro-2-[2-(2-chloro-5-nitrophenyl)hydrazin-1-ylidene]acetate

ethyl (2Z)-2-chloro-2-[2-(4-phenoxyphenyl)hydrazin-1-ylidene]acetate

1-(2-methylphenyl)-5-phenyl-4,5-dihydro-1H-pyrazole-3-carboxylic acid

1-(3,4-dimethylphenyl)-5-phenyl-4,5-dihydro-1H-pyrazole-3-carboxylic acid