4-Pro-7,9,10-trp-11-phe-substance P 89457-20-5 Dpdtp-octa L-Phenylalaninamide, D-prolyl-L-glutaminyl-L-glutaminyl-D-tryptophyl-L-phenylalanyl-D-tryptophyl-D-tryptophyl- Substance P (4-11), pro(4)-trp-(7,9,10)-phe(11)- Substance P (4-11), prolyl-(4)-tryptophyl(7,9,10)-phenylalanine(11)-