CAS: 2809-21-4 Molecular Formula: C2H8O7P2 Molecular Weight (g/mol): 206.027 MDL Number: MFCD00070585 InChI Key: DBVJJBKOTRCVKF-UHFFFAOYSA-N Synonym: etidronic acid,etidronate,hedp,1-hydroxyethylidene-1,1-diphosphonic acid,ehdp,etidronsaeure,acetodiphosphonic acid,hydroxyethanediphosphonic acid,oxyethylidenediphosphonic acid,turpinal sl PubChem CID: 3305 ChEBI: CHEBI:4907 IUPAC Name: (1-hydroxy-1-phosphonoethyl)phosphonic acid SMILES: CC(O)(P(=O)(O)O)P(=O)(O)O