4-[4-[2-[[3-(2-aminoethyl)-1H-indol-5-yl]oxy]acetyl]piperazin-1-yl]benzonitrile 4-[4-[2-[[3-(2-aminoethyl)-1H-indol-5-yl]oxy]-1-oxoethyl]-1-piperazinyl]benzonitrile 4-[4-[2-[[3-(2-aminoethyl)-1H-indol-5-yl]oxy]ethanoyl]piperazin-1-yl]benzonitrile 170912-52-4 Donitriptan Donitriptan [INN] 1-(((3-(2-Aminoethyl)indol-5-yl)oxy)acetyl)-4-(p-cyanophenyl)piperazine.