.beta.-Nitroalizarin 1,2-Dihydroxy-3-nitroanthraquinone 3-Nitroalizarin 568-93-4 9,10-Anthracenedione, 1,2-dihydroxy-3-nitro- Alizarin orange Alizarin, 3-nitro- Alizarine Orange Alizarine Orange A Anthraquinone, 1,2-dihydroxy-3-nitro- C.I. 58015 C.I. Mordant Orange C.I. Mordant Orange 14 NSC37586