N-Methyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine (As per EP or USP) ; N-Desmethyl Almotriptan ; 1-[[[3-[2-(Methylamino)ethyl]-1H-indol-5-yl]methyl]sulfonyl]-pyrrolidine; N-Methyl-5-[(1-pyrrolidinylsulfonyl)methyl]-indole-3-ethanamine; N-methyl-2-{5-[(pyrrolidin-1-ylsulfonyl)methyl]-1H-indol-3-yl}ethanamine; Almotriptan Related Compound C(USP);