2-{4-[(tert-butoxy)carbonyl]piperazin-1-yl}benzoic acid
2-(piperazin-1-yl)benzoic acid
tert-butyl 4-(2-formylphenyl)piperazinecarboxylate
4-[2-(2-amino-4-trifluoromethyl-phenylcarbamoyl)phenyl]piperazine-1-carboxylic acid tert-butyl ester
2-(3,5-dimethyl-1H-pyrazol-1-yl)acetic acid