3- p -Tolyl-[1,2,4]oxadiazole-5-carboxylic acid hydrazide

2-(4-Bromo-pyrazol-1-yl)-propionic acid hydrazide

5-(3-Bromo-phenyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-(2,5-Dimethyl-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-(4-Chloro-2-methyl-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

1-(2,6-Dichloro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid hydrazide

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

(4-Tetrazol-1-yl-phenyl)-acetic acid hydrazide

(5-Methyl-3-nitro-pyrazol-1-yl)-acetic acid hydrazide

4-Bromo-1 H -pyrazole-3-carboxylic acid hydrazide

5-(4-Fluoro-phenyl)-7-trifluoromethyl-4,5,6,7-tetrahydro-pyrazolo[1,5- a ]pyrimidine-2-carboxylic acid hydrazide