Sumatriptan EP Impurity F Catalogue No. - VL950003 CAS No. - 2074615-63-5 Molecular Formula - C13H17N3O2S Molecular Weight - 279.36 IUPAC Name - N-Methyl-1-(2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indol-6-yl)methanesulfonamide