1 56J 3-(9h-fluoren-9-yl)propanal 1.000 2 AN1 3-(10-methyl-anthracen-9-yl)-propionic acid 0.810 3 HXP 3,6-dihydroxy-xanthene-9-propionic acid 0.773 4 OX1 [2'-carboxylethyl]-10-methyl-anthracene endoperoxide 0.739 5 9FL 9h-fluorene 0.722 6 70G 3-[(1r)-8-methyl-1,2,3,4-tetrahydronaphthalen-1-yl]propanoic acid 0.700 7 ALN Naphthalen-2-yl-3-alanine 0.700