(Tyr-ala-gly-phe-NH2)2 (Tyrosyl-alanyl-glycyl-phenylalaninamide)dimer 83916-01-2 Biphalin Bis(tyr-ala-gly-phenh2)hydrazide Bis(tyrosyl-alanyl-glycyl-phenylalaninamide)hydrazide D-ENK D-Enk-O Dala(2) L-Phenylalanine, N-(N-(N-L-tyrosyl-D-alanyl)glycyl)-, 2-(N-(N-(N-L-tyrosyl-D-alanyl)glycyl)-L-phenylalanyl)hydrazide