136912-73-7 GR 51667 GR-51667 L-Methionine, N-(N-(1-(N-(N-(5-amino-1-oxopentyl)-L-phenylalanyl)-L-phenylalanyl)-D-prolyl)-L-leucyl)- Substance P (7-11), delta-ava-pro(9)- Substance P (7-11). delta-aminovalyl-pro(9)- delta-Ava-pro(9)-substance P (7-11)