10α-Methoxy-9,10-dihydrolysergol-d3

10α-Methoxy-9,10-dihydrolysergol-d3 is deuterium labeled 6aR,9R,10aS)-10a-Methoxy-7-methyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinolin-9-yl)methanol (Nicergoline Impurity).