6370-88-3 9,10-Anthracenedione, 4,8-diamino-1,2,5,6-tetrahydroxy- Alizarine Cyanine G Alizarine Cyanine WRB Anthraquinone, 4,8-diamino-1,2,5,6-tetrahydroxy- C.I. 63020 NSC75900