1 2PB 2-[(dioxidophosphino)oxy]benzoate 1.000 2 262 2-formylphenyl dihydrogen phosphate 0.857 3 4OJ (2-methylphenyl) dihydrogen phosphate 0.786 4 300 2-formyl-6-methoxyphenyl dihydrogen phosphate 0.750 5 71F 2-methoxybenzoic acid 0.714 6 HPS Phenyl dihydrogen phosphate 0.714 7 QMP Cyclohexyl methylphosphonate 0.714 8 299 2,6-diformyl-4-methylphenyl dihydrogen phosphate 0.706