169543-49-1 192333-19-0 Glycyl-N2-ethyl-L-lysyl-L-prolyl-L-arginine ITF 1697 Icrocaptide Icrocaptide [INN] L-Arginine, N2-(1-(N2-ethyl-N2-glycyl-L-lysyl)-L-prolyl)- L-Arginine, glycyl-N2-ethyl-L-lysyl-L-prolyl-