ethyl 4-[4-(aminocarbonyl)-3-nitro-1H-pyrazol-1-yl]butanoate

5-(Difluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid

ethyl 1-ethyl-3-nitro-1H-pyrazole-5-carboxylate

5-(bromomethyl)-1-ethyl-3-methyl-1H-pyrazole

3-(bromomethyl)-1-isopropyl-1H-pyrazole

methyl 3-(3-bromo-1H-pyrazol-1-yl)propanoate

3-(3-bromo-1H-1,2,4-triazol-1-yl)propanoic acid

methyl 4-chloro-5-methylisoxazole-3-carboxylate

1'-ethyl-4'-nitro-1'H-1,3'-bipyrazole-3-carboxylic acid

1-(2,2-difluoroethyl)-4-ethynyl-1H-pyrazole

ethyl 3-(aminocarbonyl)-1-methyl-1H-pyrazole-4-carboxylate