2,3-Dihydro-1,4-dihydroxyanthraquinone 40498-13-3 9,10-Anthracenedione, 2,3-dihydro-1,4-dihydroxy- Anthraquinone, 2,3-dihydro-1,4-dihydroxy Leuco-1,4-dihydroxyanthraquinone Leucoquinazarin Leucoquinizarin NSC42299