4-amino-1-(2-hydrazinoethyl)-1H-pyrazole-5-carboxylic acid

(5-fluoro-2-thienyl)acetic acid

1-ethyl-5-fluoro-1H-pyrazole-4-sulfonyl chloride

2-fluoro-5-iodothiophene

3-(Difluoromethyl)-1-methyl-1H-pyrazole

5-(Difluoromethyl)-1-ethyl-1H-pyrazole

5-(Difluoromethyl)-3-nitropyrazolo[1,5-a]pyrimidine

1-(2-fluoroethyl)-4-nitro-1H-pyrazole-3-carbonyl chloride

5-fluoro-1,3-dimethyl-1H-pyrazole-4-sulfonohydrazide

1-ethyl-5-ethynyl-1H-pyrazole

methyl 5-hydrazino-1,3-dimethyl-1H-pyrazole-4-carboxylate