5-Amino-8-guanidino-4-oxo-2-phenylmethyloctanoic acid hydrochloride 85713-14-0 Arphamenine A Arphamenine A hydrochloride Benzenepropanoic acid, alpha-(3-amino-6-((aminoiminomethyl)amino)-2-oxohexyl)-, monohydrochloride, (S-(R*,S*))-