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

4-Bromo-1-ethyl-1 H -pyrazole-3-carboxylic acid methyl ester

5-Benzo[1,3]dioxol-5-yl-1 H -pyrazole-3-carboxylic acid methyl ester

5-(3,4-Dichloro-phenyl)-1 H -pyrazole-3-carboxylic acid methyl ester

1-(2,4-Dichloro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid methyl ester

1-(4-Bromo-2-chloro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid methyl ester

1-(2-Bromo-4-chloro-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid methyl ester

2-(4-Chloro-3,5-dimethyl-pyrazol-1-yl)-butyric acid ethyl ester

4-(4-Chloro-phenyl)-2,4-dioxo-butyric acid methyl ester