35238-56-3 Glycine, N-(N-(N-L-tyrosyl-L-alpha-glutamyl)-L-alanyl)-, homopolymer, compd. with glycine ethyl ester Poly(L-tyrosyl-L-glutamyl-L-alanyl-glycyl)glycine ethyl ester Poly(tyr-glu-ala-gly)gly ethyl ester