1 D4R (4r,7ar,12bs)-7,9-dimethoxy-3-methyl-2,4,7a,13-tetrahydro-1h-4,12-methanobenzofuro[3,2-E]isoquinoline 1.000 2 4NQ Dextromethorphan 0.870 3 OOX 14-hydroxy-3-methoxy-17-methyl-5beta-4,5-epoxymorphinan-6-one 0.840 4 GNT (-)-galanthamine 0.760 5 MOI (7r,7as,12bs)-3-methyl-2,3,4,4a,7,7a-hexahydro-1h-4,12-methano[1]benzofuro[3,2-E]isoquinoline-7,9-diol 0.760 6 08V Glaucine 0.750 7 DEH 2,9-dihydroxy-3,10-dimethoxy-5,6-dihydroisoquino[3,2-a]isoquinolinium 0.741 8 SLX (13as)-3,10-dimethoxy-5,8,13,13a-tetrahydro-6h-isoquino[3,2-a]isoquinoline-2,9-diol 0.741 9 A1A4J N-methyltetrahydropalmatine 0.724 10 H68 Tetrahydrocolumbamine 0.714