HEDP.Na4; 1-Hydroxyethylidene-1,1-Diphosphonic Acid, Tetrasodium. ,HEDP.NA4;deflocen43;turpinal4nl;tarpinel4nl;dequest2016;sequion10na4;tetrasodiumetidronate;hedp tetrasodium salt;tetrasodium 1,1-diphosphonatoethanol;tetra sodium hydroxyethylidene diphosphonate ,HEDP•Na4; Phosphonic acid, P,P'-(1-hydroxyethylidene)bis-, sodium salt (1:4); Tetrasodium (1-hydroxyethylidene)bisphosphonate   cas :3794-83-0