1 ADL (1,8-dihydroxy-9-oxo-9,10-dihydro-anthracen-2-yl)-acetic acid 1.000 2 OAL (1,8-dihydroxy-9,10-dioxo-9,10-dihydro-anthracen-2-yl)-acetic acid 0.955 3 CHZ 1,8-dihydroxyanthracene-9,10-dione 0.773 4 1YE (5,6-dimethyl-9-oxo-9h-xanthen-4-yl)acetic acid 0.750 5 QOI 1,3,8-tris(oxidanyl)anthracene-9,10-dione 0.739 6 ANF Anthrone 0.714 7 3O7 1,4,5,8-tetrahydroxyanthracene-9,10-dione 0.708 8 EMO 3-methyl-1,6,8-trihydroxyanthraquinone 0.708 9 OG9 (pyren-1-yl)acetic acid 0.708 10 QPO 3-methoxy-1,8-bis(oxidanyl)anthracene-9,10-dione 0.708 11 TXQ 1,2,5,8-tetrahydroxyanthracene-9,10-dione 0.708