15979-72-3 9,10-Anthracenedione, 2,4,5-trihydroxy-7-methoxy-1-(1-oxobutyl)- Anthraquinone, 1-butyryl-2,4,5-trihydroxy-7-methoxy- NSC288034 RUBROCOMATULIN 6-METHYL ETHER (AN) Rubrocomatulin 6-methyl ether