CAS: 81-54-9 Molecular Formula: C14 H8 O5 Molecular Weight (g/mol): 256.21 Synonym: Anthraquinone, 1,2,4-trihydroxy- (7CI,8CI),Purpurin (6CI),1,2,4-Trihydroxy-9,10-anthracenedione,1,2,4-Trihydroxy-9,10-anthraquinone,1,2,4-Trihydroxy-9,10-dihydroanthracene-9,10-dione,1,2,4-Trihydroxyanthraquinone,C.I. 58205,C.I. 75410,Hydroxylizaric acid,NSC 10447,Purpurin (dye),Purpurine,Smoke Brown G,Verantin IUPAC Name: 1,2,4-trihydroxyanthracene-9,10-dione SMILES: Oc1cc(O)c2C(=O)c3ccccc3C(=O)c2c1O