1,5-Dimethoxyanthrachinon [Czech] 1,5-Dimethoxyanthraquinone 4-08-00-03269 (Beilstein Handbook Reference) 6448-90-4 9,10-Anthracenedione, 1,5-dimethoxy- ANTHRAQUINONE, 1,5-DIMETHOXY- BRN 1914893 EINECS 229-244-8 NSC 37606