1 I59 Hydroxy(1-naphthyl)methylphosphonic acid 1.000 2 M3Q [(quinolin-8-yl)methyl]phosphonic acid 0.824 3 KED [(2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.778 4 SYD [(5-phenylpyridin-2-yl)methyl]phosphonic acid 0.737 5 T6Z [(1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.737 6 SYE (quinolin-2-ylmethyl)phosphonic acid 0.722 7 7WO 2-hydroxynaphthalene-1-carbaldehyde 0.706 8 BOY [(R)-hydroxy(4-methylphenyl)methyl]phosphonic acid 0.706 9 7SX [(5,7-dimethyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.700 10 FUJ [(7-methoxy-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.700 11 GTV [(5,7-dimethyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.700 12 L8J [(5,7-dibromo-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.700 13 P9T [(5,7-difluoro-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.700 14 TWB [(6,7-dimethyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.700 15 YKG [(5-bromo-7-methyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.700