4-Phenylpiperazineethanol o-(2,3-dimethylamino)benzoate hydrochloride 74037-87-9 Piperazineethanol, 4-phenyl-, N-(2,3-dimethylphenyl)anthranilate, hydrochloride Piperazineethanol, 4-phenyl-, o-(2,3-dimethylphenylamino)benzoate, hydrochloride