1 H23 (1-hydroxydodecane-1,1-diyl)bis(phosphonic acid) 1.000 2 252 (1-hydroxynonane-1,1-diyl)bis(phosphonic acid) 0.857 3 NT8 (1-azanyl-1-phosphono-decyl)phosphonic acid 0.818 4 028 (1-hydroxyheptane-1,1-diyl)bis(phosphonic acid) 0.762 5 FHP 1-hydroxy-3,7,11-trimethyldodeca-2,6,10-triene phosphonic acid 0.708 6 HFP Alpha-hydroxyfarnesylphosphonic acid 0.708