4-Pro-7,9-npa-11-phe-substance P (4-11) 4-Prolyl-7,9-naphthylalanyl-11-phenylalanine-substance P (4-11) 93490-35-8 L-Phenylalaninamide, D-prolyl-L-glutaminyl-L-glutaminyl-3-(1-naphthalenyl)-D-alanyl-L-phenylalanyl-3-(1-naphthalenyl)-D-alanyl-L-leucyl-, (3beta)- PNPSP Substance P (4-11), pro(4)-npa(7,9)-phe(11)- Substance P (4-11), prolyl(4)-naphthylalanyl(7,9)-phenylalanine(11)-