1,2-Dihydroxy-9,10-anthracenedione 1,2-Dihydroxy-anthraquinone 1,2-dihydroxyanthra-9,10-quinone 72-48-0 9,10-anthracenedione, 1,2-dihydroxy- Alizarin Hystazarin InChI=1/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18