117176-50-8 Benzyloxycarbonyltyrosylalanine diazomethane Benzyloxycarbonyltyrosylalanyldiazomethane Carbamic acid, (2-((3-diazo-1-methyl-2-oxopropyl)amino)-1-((4-hydroxyphenyl)methyl)-2-oxoethyl)-, phenylmethyl ester N-Benzyloxycarbonyl-tyrosyl-alanyl diazomethane N-Benzyloxycarbonyltyrosylalanyldiazomethane Z-Tyr-ala-chn2