1-Dearginyl-2,4-deprolyl-3-delysyl-5-deglutamine-substance P 1-Des-arg-2,4-des-pro-3-des-lys-5-des-gln-substance P 51165-07-2 78081-72-8 Pglu sph SP(6-11) Sendide Substance P hexapeptide Substance P, 1-de-L-arginine-2-de-L-proline-3-de-L-lysine-4-de-L-proline-5-de-L-glutamine- Substance P, dearginyl(1)-deprolyl(2,4)-delysyl(3)-deglutamine(5)- substance P (6-11)