72732-46-8 EK 209 EK-209 L-Phenylalanine, N-methyl-N-(N-(N-L-tyrosyl-D-alanyl)glycyl)-, 2-(1-oxopropyl)hydrazide Tyr-ala-gly-mephe-nhnhcoch2CH3 Tyrosyl-alanyl-glycyl-methylphenylalanine-2-(1-oxopropyl)hydrazide