1,3-dihydroxy-2-methylanthracene-9,10-dione 1,3-dihydroxy-2-methyl-anthracene-9,10-dione 1,3-dihydroxy-2-methyl-9,10-anthraquinone 117-02-2 9,10-Anthracenedione, 1,3-dihydroxy-2-methyl- AIDS-098142 AIDS098142 C10402 Rubiadin CCRIS 4533