1,1',2,2',3,3',4,4'-Octahydro-6,6',7,7'-tetramethoxy-1,1'-tetramethylendi(isochinolin) 1,1'-Tetramethylenebis(1,2,3,4-tetrahydro-6,7-dimethoxy-isoquinoline) 22407-74-5 BISOBRIN Bisobrina [INN-Spanish] Bisobrine [INN-French] Bisobrinum [INN-Latin] Isoquinoline, 1,1'-(1,4-butanediyl)bis(1,2,3,4-tetrahydro-6,7-dimethoxy-, (R*,S*)-