122458-82-6 2-(3-Pyridinyl)-2-hydroxyethylidene-1,1-bisphosphonate NE 58095 NE-58095 Phosphonic acid, (1-hydroxy-2-(3-pyridinyl)ethylidene)bis-, disodium salt Phosphonic acid, (2-hydroxy-2-(3-pyridinyl)ethylidene)bis-, disodium salt