1 3O7 1,4,5,8-tetrahydroxyanthracene-9,10-dione 1.000 2 TXQ 1,2,5,8-tetrahydroxyanthracene-9,10-dione 0.905 3 CHZ 1,8-dihydroxyanthracene-9,10-dione 0.900 4 9TF Purpurin 0.857 5 QOI 1,3,8-tris(oxidanyl)anthracene-9,10-dione 0.857 6 EMO 3-methyl-1,6,8-trihydroxyanthraquinone 0.818 7 MNY 5,8-di-amino-1,4-dihydroxy-anthraquinone 0.818 8 QPO 3-methoxy-1,8-bis(oxidanyl)anthracene-9,10-dione 0.818 9 HNA 1,8-di-hydroxy-4-nitro-anthraquinone 0.783 10 RHN 4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid 0.783 11 EKU 1,3,5,8-tetrakis(oxidanyl)xanthen-9-one 0.773 12 ANF Anthrone 0.750 13 OAL (1,8-dihydroxy-9,10-dioxo-9,10-dihydro-anthracen-2-yl)-acetic acid 0.750 14 QPF 1-methoxy-3,8-bis(oxidanyl)anthracene-9,10-dione 0.739 15 JJY 3,4,6,7-tetrahydroacridine-1,8(2h,5h)-dione 0.714 16 91L 1-amino-4-hydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid 0.708 17 ADL (1,8-dihydroxy-9-oxo-9,10-dihydro-anthracen-2-yl)-acetic acid 0.708 18 QOT 3,8-dimethoxy-1-oxidanyl-anthracene-9,10-dione 0.708 19 QP3 1,3-dimethoxy-8-oxidanyl-anthracene-9,10-dione 0.708 20 AN3 Anthracene 0.700