(S)-6,7-Dihydro-2-hydroxy-1,3,10-trimethoxy-7-(methylamino)benzo(a)heptalen-9(5H)-one 2-Demthyldemecolcine 7359-91-3 Benzo(a)heptalen-9(5H)-one, 6,7-dihydro-2-hydroxy-1,3,10-trimethoxy-7-(methylamino)-, (S)-