4-Pro-7,9-trp-11-leunh2-substance P (4-11) 87026-40-2 L-Leucinamide, D-prolyl-L-glutaminyl-L-glutaminyl-D-tryptophyl-L-phenylalanyl-D-tryptophyl-L-leucyl- Pts-substance P (4-11) Substance P (4-11), pro(4)-trp(7,9)-leunh2(11)- Substance P (4-11),prolyl(4)-tryptophyl(7,9)-leucinamide(11)-