ethyl (2Z)-2-chloro-2-[2-(3-nitrophenyl)hydrazin-1-ylidene]acetate

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

3-(ethoxycarbonyl)-1-(2-fluorophenyl)-4,5-dihydro-1H-pyrazole-5-carboxylic acid

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

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

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

3-(ethoxycarbonyl)-1-(2-methoxy-5-methylphenyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

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

1-(5-chloro-2-methoxyphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

1-(3-chloro-2-methylphenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1H-pyrazole-5-carboxylic acid

4-(4-methoxybenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid