# Lexidronam pentasodium

CAS: 7651-99-2
PubChem CID: 165629
InChIKey: QPTMDBQLCWRDCK-UHFFFAOYSA-I
Wikidata: Q27255875
Molecular formula: C₆H₁₅N₂Na₅O₁₂P₄
Molar mass: 546.03 g/mol
IUPAC: pentasodium;[2-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]ethyl-(phosphonatomethyl)amino]methyl-hydroxyphosphinate
SMILES: C(CN(CP(=O)(O)[O-])CP(=O)([O-])[O-])N(CP(=O)(O)[O-])CP(=O)(O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+]
InChI: InChI=1S/C6H20N2O12P4.5Na/c9-21(10,11)3-7(4-22(12,13)14)1-2-8(5-23(15,16)17)6-24(18,19)20;;;;;/h1-6H2,(H2,9,10,11)(H2,12,13,14)(H2,15,16,17)(H2,18,19,20);;;;;/q;5*+1/p-5
PSA: 251 A^2
Hydrogen bond donors: 3
Hydrogen bond acceptors: 14
Rotatable bonds: 10
Heavy atoms: 29
3D structure: 44 atoms, 38 bonds

## About the compound

Lexidronam pentasodium is a chemical compound registered under CAS number 7651-99-2. Molecular formula: C₆H₁₅N₂Na₅O₁₂P₄. Molar mass: 546.03 g/mol. The full systematic IUPAC name is: pentasodium;[2-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]ethyl-(phosphonatomethyl)amino]methyl-hydroxyphosphinate. The molecule contains 44 atoms connected by 38 chemical bonds. 
Chemical data comes from the PubChem (NIH), ChEMBL (EBI) and NIST WebBook databases. GHS statement translations comply with the CLP Regulation (EC 1272/2008). Interactive 3D model and 2D skeleton available at: https://molgod.org/molecule/7651-99-2/


## Synonyms

  - EDTMP pentasodium salt
  - Lexidronam pentasodium salt
  - lexidronam pentasodium
  - Ethylenediamine tetra(methylenephosphonic acid) pentasodium salt
  - 2ZYX2V82AD
  - EINECS 231-615-4
  - Phosphonic acid, [1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis-, pentasodium salt
  - Ethylenediaminetetramethylenephosphonic acid, pentasodium salt
  - Pentasodium Ethylenediamine Tetramethylene Phosphonate
  - Phosphonic acid, (1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, pentasodium salt
  - Pentasodium trihydrogen (ethane-1,2-diylbis(nitrilobis(methylene)))tetrakisphosphonate
  - PENTASODIUM ETHYLENEDIAMINETETRA(METHYLENEPHOSPHONATE)

## Data sources

  - PubChem CID 165629: https://pubchem.ncbi.nlm.nih.gov/compound/165629
  - Wikidata: https://www.wikidata.org/wiki/Q27255875
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=7651-99-2
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=7651-99-2

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Last updated: 2026-10-17
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