1 0KC {2-[2-(cyclopentylamino)-2-oxoethoxy]phenyl}phosphonic acid 1.000 2 0KG {2-[2-(cyclohexylamino)-2-oxoethoxy]phenyl}phosphonic acid 0.864 3 Y04 (2-{2-[(2-chlorophenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.826 4 Y06 (2-{2-[(3-chlorophenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.826 5 0KH (2-{2-[(2,3-dichlorophenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.792 6 Y03 (2-{2-[(3,5-dichlorophenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.792 7 Y09 (2-{2-[(3-methoxyphenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.792 8 0KB [2-(2-oxo-2-{[3-(trifluoromethyl)phenyl]amino}ethoxy)phenyl]phosphonic acid 0.731 9 1CT [2-(2-oxo-2-{[2-(trifluoromethyl)phenyl]amino}ethoxy)phenyl]phosphonic acid 0.731 10 2CT (2-{2-[(2,5-dimethoxyphenyl)amino]-2-oxoethoxy}phenyl)phosphonic acid 0.731 11 Y07 [2-(2-{[2-chloro-5-(trifluoromethyl)phenyl]amino}-2-oxoethoxy)phenyl]phosphonic acid 0.704