1 39L [1-fluoro-2-(imidazo[1,2-a]pyridin-3-yl)ethane-1,1-diyl]bis(phosphonic acid) 1.000 2 M0N (1-hydroxy-2-imidazo[1,2-a]pyridin-3-ylethane-1,1-diyl)bis(phosphonic acid) 0.905