1-ethyl-4-methyl-5-nitro-1H-imidazole

1-(3-tert-butoxy-2-methyl-3-oxopropyl)-1H-pyrazole-4-carboxylic acid

3-[3-(tert-butoxycarbonyl)-1H-pyrazol-1-yl]propanoic acid

4-[3-(methoxycarbonyl)-1H-pyrazol-1-yl]butanoic acid

3-[3-(methoxycarbonyl)-1H-pyrazol-1-yl]butanoic acid

2-[4-(ethoxycarbonyl)-3-nitro-1H-pyrazol-1-yl]butanoic acid

2-[4-(methoxycarbonyl)-1H-pyrazol-1-yl]-2-methylpropanoic acid

4-[4-(ethoxycarbonyl)-1H-pyrazol-1-yl]butanoic acid

3-[4-(methoxycarbonyl)-1H-pyrazol-1-yl]butanoic acid

methyl 3-amino-1-(1-naphthylmethyl)-1H-pyrazole-4-carboxylate

methyl 3-amino-1-(2,6-dichlorobenzyl)-1H-pyrazole-4-carboxylate