2-[4-[4-(diaminomethylideneamino)benzoyl]oxyphenyl]acetic acid; methanesulfonic acid 2-[4-(4-guanidinobenzoyl)oxyphenyl]acetic acid; methanesulfonic acid 2-[4-[(4-guanidinophenyl)-oxomethoxy]phenyl]acetic acid; methanesulfonic acid 2-[4-[4-(diaminomethylideneamino)phenyl]carbonyloxyphenyl]ethanoic acid; methanesulfonic acid 71079-09-9 4-(4-Guanidinobenzoyloxy)phenylacetic acid Benzeneacetic acid, 4-((4-((aminoiminomethyl)amino)benzoyl)oxy)-, monomethanesulfonate Foy 251 Foy-251