5-(3,4-Dimethyl-phenoxymethyl)-furan-2-carboxylic acid hydrazide

6-Iodo-7-nitro-3 H -isobenzofuran-1-one

5-Nitro-benzo[b]thiophene-2-carboxylic acid ethyl ester

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

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

2- sec -Butylamino-4-methyl-thiazole-5-carboxylic acid ethyl ester

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

1-Cyclopentyl-1 H -pyrazole-3-carboxylic acid ethyl ester

6-Chloromethyl-4-(4-methoxy-3-methoxymethyl-phenyl)-2-oxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester

6-Chloromethyl-2-oxo-4-phenyl-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester

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