65286-27-3 Arg-4-hmec Arg-amc Arginine 4-methyl-7-coumarylamide Arginine 4-methylcoumarinyl-7-amide Arginyl-7-amido-4-methylcoumarin Pentanamide, 2-amino-5-((aminoiminomethyl)amino)-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)-, (S)-