SLJRRWMZTREGIF-UHFFFAOYSA-O

1,3-Bis(2-hydroxy-2,2-diphosphonoethyl)-imidazolium Soidum Salt (1:7), ( is an impurity of Zolendronic acid (trihydrate: Z623501), a biphosphonate that is used for the management of osteoporosis and the treatment of bone metastases from various types of cancers.