Nicergoline EP Impurity A

((6aR,9R,10aS)-10a-methoxy-4,7-dimethyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinolin-9-yl)methanol

((6aR,6'aR,9R,9'R,10aS,10'aS)-10a,10'a-dimethoxy-4',7,7'-trimethyl-4',6a,6',6'a,7,7',8,8',9,9',10,10a,10',10'a-tetradecahydro-6H-[4,5'-biindolo[4,3-fg]quinoline]-9,9'-diyl)bis(methylene)bis(5-bromonicotinate)

((6aR,9R,10aR)-4,7-dimethyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinolin-9-yl)methyl5-bromonicotinate

((6aR,9R,10aS)-10a-methoxy-7-methyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinolin-9-yl)methyl5-bromonicotinate

((6aR,9R,10aS)-10a-methoxy-4,7-dimethyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinolin-9-yl)methyl5-bromonicotinate-13CD3