1 KED [(2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 1.000 2 T6Z [(1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.941 3 7SX [(5,7-dimethyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.889 4 L8J [(5,7-dibromo-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.889 5 A1A4D [(7-cyclopropyl-1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.800 6 FUJ [(7-methoxy-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.789 7 GTV [(5,7-dimethyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.789 8 P9T [(5,7-difluoro-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.789 9 TWB [(6,7-dimethyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.789 10 YKG [(5-bromo-7-methyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.789 11 I59 Hydroxy(1-naphthyl)methylphosphonic acid 0.778 12 A1A22 [(7-cyclopropyl-6-fluoro-1-methyl-2-oxo-1,2-dihydroquinolin-4-yl)methyl]phosphonic acid 0.762 13 AJ2 4-methylquinolin-2-ol 0.750 14 VKE [(6-oxo-2h,6h-[1,3]dioxolo[4,5-G][1]benzopyran-8-yl)methyl]phosphonic acid 0.750 15 XJE [(5-methoxy-7-methyl-2-oxo-2h-1-benzopyran-4-yl)methyl]phosphonic acid 0.750 16 A1A25 {[1-methyl-2-oxo-7-(pyrrolidin-1-yl)-1,2-dihydroquinolin-4-yl]methyl}phosphonic acid 0.727 17 M3Q [(quinolin-8-yl)methyl]phosphonic acid 0.722 18 MVN 6-chloro-4-methyl-1h-quinolin-2-one 0.706 19 ZXZ 1,4-dimethylquinolin-2(1h)-one 0.706