131-04-4 3486-67-7 5,6-Dihydro-2,3,9,10-tetramethoxydibenzo(a,g)quinolizinium hydroxide 7,8,13,13a-Tetradehydro-2,3,9,10-tetramethoxyberbinium hydroxide Calystigine Dibenzo(a,g)quinolizinium, 5,6-dihydro-2,3,9,10-tetramethoxy-, hydroxide Palmatine hydroxide Palmatinium hydroxide