4-Amino-5-ethyl-4 H -[1,2,4]triazole-3-thiol

(5-Cyclopropyl-3-difluoromethyl-pyrazol-1-yl)-acetic acid hydrazide

[4-(1-Ethyl-3-methyl-1 H -pyrazol-4-yl)-6-trifluoromethyl-pyrimidin-2-yl]-hydrazine

2-(4-Oxo-6-propyl-4 H -thieno[2,3- d ]pyrimidin-3-yl)-propionic acid hydrazide

(4-Chloro-5-cyclopropyl-3-difluoromethyl-pyrazol-1-yl)-acetic acid hydrazide

1-(2-Nitro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

2-(2-Chloro-phenoxymethyl)-2 H -pyrazole-3-carboxylic acid hydrazide

1-(3,5-Dimethyl-4-nitro-pyrazol-1-ylmethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-(4-Fluoro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-(4-Bromo-pyrazol-1-ylmethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-Pyrazol-1-ylmethyl-1 H -pyrazole-3-carboxylic acid hydrazide