Dihydroergotamine - (6aR,9R,10aR)-N-[(1S,2S,4R,7S)-7-benzyl-2-hydroxy-4-methyl-5,8-dioxo-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide ;
Dihydroergotamine EP Impurity A - (6aR,9R)-N-[(2R,5S,10aS,10bS)-5-Benzyl-10b-hydroxy-2-methyl-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide ;
Dihydroergotamine EP Impurity B - (6aR,9R,10aR)-N-[(2R,5S,10aS,10bS)-5-Benzyl-2-ethyl-10b-hydroxy-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-7-methyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinoline-9-carboxamide ; 9,10-Dihydroergostine ;
Dihydroergotamine EP Impurity C - (6aR,9S,10aR)-N-[(2R,5S,10aS,10bS)-5-Benzyl-10b-hydroxy-2-methyl-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-9-hydroxy-7-methyl-4,6,6a,7,8,9,10,10aoctahydroindolo[4,3-fg]quinoline-9-carboxamide ;
Dihydroergotamine EP Impurity D - (6aR,9R,10aR)-N-[(2S,5S,10aS,10bS)-5-Benzyl-10b-hydroxy-2-methyl-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-7-methyl-4,6,6a,7,8,9,10,10aoctahydroindolo[4,3-fg]quinoline-9-carboxamide ;
Dihydroergotamine EP Impurity E - (6aR,9R,10aR)-N-[(2R,5S,10aS,10bS)-5-benzyl-10bhydroxy-2-(1-methylethyl)-3,6-dioxo-octahydro-8Hoxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-7-methyl4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinoline-9-carboxamide ;