1-(3-(2-(dimethylamino)ethyl)-2-((3-(2-(dimethylamino)ethyl)-1H-indol-5-yl)methyl)-1H-indol-5-yl)-N-methylmethanesulfonamide;3-[2-(Dimethylamino)ethyl]-2-[[3-[2-(dimethylamino)ethyl]-1H-indol-5-yl]methyl]-N-methyl-1H-Indole-5-methanesulfonamide; USP Sumatriptan Succinate Impurity A; Sumatriptan EP Impurity A;2-[[3-[2-(Dimethylamino)ethyl]-1H-indol-5-yl]methyl] Sumatriptan
