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

2-Ethyl-5-trifluoromethyl-2 H -pyrazole-3-carboxylic acid hydrazide

1-(4-Chloro-benzenesulfonyl)-piperidine-4-carboxylic acid hydrazide

1-(1-Ethyl-3-methyl-1H-pyrazole-4-sulfonyl)-piperidine-3-carbohydrazide

2-(5-Methyl-3-nitro-pyrazol-1-yl)-butyric acid hydrazide

(4-Bromo-pyrazol-1-yl)-acetic acid hydrazide

3-Difluoromethyl-5-methylsulfanyl-[1,2,4]triazol-4-ylamine

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

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

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

4-Nitro-pyrazol-1-ylamine