102989-34-4 H-His-lys-thr-asp-ser-phe-val-gly-leu-met-OH L-Methionine, N-(N-(N-(N-(N-(N-(N-(N-(N2-L-histidyl-L-lysyl)-L-threonyl)-L-alpha-aspartyl)-L-seryl)-L-phenylalanyl)-L-valyl)glycyl)-L-leucyl)- Neurokinin A-OH Nka-OH