3,3-dimethyl-1-(3-methylpiperazin-1-yl)butan-1-one

1-benzoyl-2-methylpiperazine

1-cyclopropanecarbonyl-2-methylpiperazine

2-methyl-1-(2-methylbenzoyl)piperazine

1-(2-bromobenzoyl)-2-methylpiperazine

ethyl (2Z)-2-chloro-2-[2-(2,4,5-trichlorophenyl)hydrazin-1-ylidene]acetate

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

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

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

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

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