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N-Methyl-1H-indole-5-ethanesulfonamide is used as a reagent in the synthesis of Naratriptan Hydrochloride (N378730); a triptan drug used for the treatment of migraine headaches.

N-Methyl-1H-Indole-5-EthaneSulphonamide, also known as 2-(1H-Indol-5-yl)-N-methylethanesulfonamide, is a white solid.

At 40-45 ℃ (hydrogen pressure: 3-4 kg/cm2), 2-(3-Phenylsulf-anyl-1H-indol-5-yl)-ethanesulfonic acidmethylamide (14) (5 g, 0.014 mol) was hydrogenated in ethanol: water (7:3) (40 ml) in an autoclave for 10 h. After that, the reaction mass was cooled to room temperature, followed by removing the catalyst through filtering. The filtrate was distilled out to get N-Methyl-1H-Indole-5-EthaneSulphonamide.