1 NRA Norathyriol 1.000 2 ZQT 9h-xanthene-1,3,6,8-tetrol 0.850 3 EKU 1,3,5,8-tetrakis(oxidanyl)xanthen-9-one 0.810 4 TXQ 1,2,5,8-tetrahydroxyanthracene-9,10-dione 0.773 5 272 4-(6-hydroxy-benzo[D]isoxazol-3-yl)benzene-1,3-diol 0.762 6 KN2 4-(6-hydroxy-1h-indazol-3-yl)benzene-1,3-diol 0.762 7 04G 7-hydroxy-3h-phenoxazin-3-one 0.750 8 CC6 3,5,7-trihydroxy-2-(2-hydroxyphenyl)-4h-1-benzopyran-4-one 0.739 9 ERD (2s)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-2,3-dihydro-4h-chromen-4-one 0.739 10 LU2 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4h-chromen-4-one 0.739 11 57D Chrysin 0.727 12 9TF Purpurin 0.727 13 A1AVI Cladophorol a 0.727 14 BXZ 4-bromo-6-(6-hydroxy-1,2-benzisoxazol-3-yl)benzene-1,3-diol 0.727 15 DFV 7-hydroxy-2-(4-hydroxy-phenyl)-chroman-4-one 0.727 16 KML Pinocembrin 0.727 17 QOI 1,3,8-tris(oxidanyl)anthracene-9,10-dione 0.727 18 B0E 1,3-bis(oxidanyl)benzo[C]chromen-6-one 0.714 19 HH6 3-(4-hydroxyphenyl)-1h-indazol-6-ol 0.714 20 6JP (2s)-5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-2,3-dihydro-4h-1-benzopyran-4-one 0.708 21 DH2 (2s,3s)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydro-4h-chromen-4-one 0.708 22 DQH (2r,3r)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-2,3-dihydro-4h-chromen-4-one 0.708 23 J8D 5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4h-1-benzopyran-4-one 0.708 24 MRI 2-[2,4-bis(oxidanyl)phenyl]-3,5,7-tris(oxidanyl)chromen-4-one 0.708 25 MYF 5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-4h-chromen-4-one 0.708 26 QUE 3,5,7,3',4'-pentahydroxyflavone 0.708 27 ANF Anthrone 0.700