11H-BENZO(b)XANTHENE-6,11,12-TRIONE, 4,9-DIBROMO-1-METHYL-3,7,8,10-TETRAMETHOXY- 33390-35-1 4,9-Dibromo-1-methyl-3,7,8,10-tetramethoxy-11H-benzo(b)xanthene-6,11,12-trione Dibromo-O-methylbikaverin