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

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

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

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

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

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

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

4-(3,5-dinitrobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid

4-(naphthalene-2-carbonyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid

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

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