1-(3,5-dinitrobenzoyl)-2-methylpiperazine

2-methyl-1-(3,4,5-trimethoxybenzoyl)piperazine

1-(4-tert-butylbenzoyl)-2-methylpiperazine

1-(2-methoxybenzoyl)-2-methylpiperazine

ethyl (2Z)-2-chloro-2-[2-(3,4-dichlorophenyl)hydrazin-1-ylidene]acetate

ethyl (2Z)-2-chloro-2-[2-(3,4-dimethylphenyl)hydrazin-1-ylidene]acetate

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

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

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

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

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

1-(3-chloro-4-methylphenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

3-(ethoxycarbonyl)-1-(4-phenoxyphenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid