1,2,6-Trihydroxyanthraquinone 82-29-1 9,10-Anthracenedione, 1,2,6-trihydroxy- Alizarine Red YCAP Alizarine Y Anthraquinone, 1,2,6-trihydroxy- C.I. 58240 C.I. Mordant Red 4 Flavopurpurin NSC401141