59543-10-1 L-Phenylalanine, 4-((aminoiminomethyl)amino)-N-((4-methylphenyl)sulfonyl)-, methyl ester, monohydrochloride N-(p-Toluenesulfonyl)-p-guanidino-L-phenylalanine methyl ester N-Tosyl-4-guanidino-L-phenylalanine methyl ester N-Tosyl-p-guanidino-L-phenylalanine methyl ester