7- p -Tolyl-pyrazolo[1,5- a ]pyrimidine-3-carboxylic acid

2-(4-Nitro-pyrazol-1-ylmethyl)-benzoic acid

4-(4-Nitro-pyrazol-1-yl)-butyric acid

1-(4-Methoxy-phenoxymethyl)-1 H -pyrazole-3-carboxylic acid

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

2,4-Dichloro-5-(N,N-diethylsulfamoyl)benzoic acid

(4-Chloro-5-cyclopropyl-3-difluoromethyl-pyrazol-1-yl)-acetic acid

5-Cyclopropyl-7-difluoromethyl-pyrazolo[1,5- a ]pyrimidine-2-carboxylic acid

5-Amino-2 H -pyrazole-3-carboxylic acid hydrochloride

5-(4-Chloro-2-isopropyl-5-methyl-phenoxymethyl)-furan-2-carboxylic acid

4-(4-Bromo-2-chloro-phenoxymethyl)-benzoic acid