DL-??? L-??? H-GLY-GLY-TYR-OH Glycine ethyl ester hydrochloride D-Tyrosine, N-glycyl- H-GLY-GLY-PHE-OH N-Glycyl-L-tyrosine Glycyl-glycyl-glycine Glycinamide hydrochloride Glycine tert butyl ester hydrochloride Glycylglycyl-L-isoleucine GLY-ARG 4-METHOXY-BETA-NAPHTHYLAMIDE DIHYDROCHLORIDE Benzyl glycinate p-toluenesulfonate Rigin GLYCYL-SARCOSINE H-GLY-GLY-GLN-OH GLYCYL-L-PHENYLALANINE GLYCYL-L-ASPARTIC ACID