1-Ethyl-1 H -pyrazole-4-carboxylic acid hydrazide

2-Oxo-4- p -tolyl-2,3-dihydro-thiazole-5-carboxylic acid ethyl ester

4-(4-Bromo-phenyl)-2-oxo-2,3-dihydro-thiazole-5-carboxylic acid ethyl ester

2-Isopropylamino-4-trifluoromethyl-thiazole-5-carboxylic acid ethyl ester

4-Chloromethyl-thiophene-2-carboxylic acid methylester

[4-(1-Ethyl-3-methyl-1 H -pyrazol-4-yl)-6-trifluoromethyl-pyrimidin-2-ylsulfanyl]-acetic acid ethylester

5-(1-Ethyl-5-methyl-1 H -pyrazol-4-yl)-isoxazole-3-carboxylic acid methyl ester

3-(4-Chloro-3-nitro-pyrazol-1-yl)-propionic acid ethyl ester

4-(2-Chloro-acetyl)-piperazine-1-carboxylic acid ethyl ester

1-(3-Nitro-benzenesulfonyl)-piperidine-4-carboxylic acid ethyl ester

(5,6-Dimethyl-4-oxo-4 H -thieno[2,3- d ]pyrimidin-3-yl)-acetic acid ethyl ester