Sumatriptan EP Impurity D

Chemical Name: N,N-dimethyl-2-(5-((N-methylsulfamoyl)methyl)-1H-indol-3-yl)ethan-1-amine oxide ; N,N-Dimethyl-2-[5-[(methylsulphamoyl)methyl]-1H-indol-3-yl] ethanamine N-oxide

Synonym: Sumatriptan N-Oxide ;