(1-Hydroxyethylidene)bis(phosphonic acid) (1-Hydroxyethylidene)diphoshonic acid (1-Hydroxyethylidene)diphosphonic acid (Hydroxyethylidene)diphosphonic acid 1-Hydroxy-1,1-diphosphonoethane 1-Hydroxyethane-1,1-bisphosphonic acid 1-Hydroxyethane-1,1-diphosphonate 1-Hydroxyethane-1,1-diphosphonic acid 1-Hydroxyethanediphosphonic acid 1-Hydroxyethylidene-1,1-diphosphonic acid 1000SL 2809-21-4 Dequest 2010 Dequest 2015 Dequest Z 010 Diphosphonate (base) EHDP Ethane-1-hydroxy-1,1-diphosphonate Ethane-1-hydroxy-1,1-diphosphonic acid Etidronic acid HEDP Hydroxyethane-1,1-diphosphonic acid Hydroxyethanediphosphonic acid NSC227995 Oxyethylidenediphosphonic acid Phosphonic acid, (1-hydroxyethylidene)bis- Phosphonic acid, (1-hydroxyethylidene)di- Turpinal SL