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CAS 7651-99-2

CAS 7651-99-2 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 7651-99-2
CAS 7651-99-2PubChem CID 165629

Lexidronam pentasodium

Lexidronam Pentasodium is the pentasodium salt form of lexidronam (ethylenediaminetetramethylenephosphonic acid; EDTMP), a phosphonate analog of ethylenediaminetetraacetic acid (EDTA), with chelating activity. Lexidronam binds to and associates with hydroxyapatite crystals concentrated in areas of bone turnover. It has been used as a radiopharmaceutical in complexes with radioactive metals to selectively deliver cytotoxic radiation to osteoblastic bone metastases. — NCI Thesaurus (NCIt)

IUPAC name
pentasodium;[2-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]ethyl-(phosphonatomethyl)amino]methyl-hydroxyphosphinate
Molecular formula
C6H15N2Na5O12P4
Molecular weight
546.03 g/mol
Exact mass
545.9063933 Da
Topological polar surface area
251.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
14
Covalent units
6
Defined stereocentres
0

Also known as

EDTMP pentasodium saltLexidronam pentasodium saltEthylenediamine tetra(methylenephosphonic acid) pentasodium salt2ZYX2V82ADEINECS 231-615-4Phosphonic acid, [1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis-, pentasodium saltEthylenediaminetetramethylenephosphonic acid, pentasodium saltPentasodium Ethylenediamine Tetramethylene Phosphonate
12 more reported names
Phosphonic acid, (1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, pentasodium saltPentasodium trihydrogen (ethane-1,2-diylbis(nitrilobis(methylene)))tetrakisphosphonatePhosphonic acid, P,P',P'',P'''-(1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, sodium salt (1:5)PENTASODIUM ETHYLENEDIAMINETETRA(METHYLENEPHOSPHONATE)pentasodium trihydrogen [ethane-1,2-diylbis[nitrilobis(methylene)]]tetrakisphosphonatePhosphonic acid, P,P',P'',P'''-[1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis-, sodium salt (1:5)RefChem:799052PENTASODIUM ETHYLENEDIAMINE TETRAMETHYLENE PHOSPHONATE [INCI]pentasodium (ethylenediamine)tetramethylenephosphonateUNII-2ZYX2V82ADSODIUM EDTMPPentasodium ({(2-{bis[(hydroxyphosphinato)methyl]amino}ethyl)[(hydroxyphosphinato)methyl]amino}methyl)phosphonate
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 7651-99-2

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How CAS 7651-99-2 is used on this site

CAS 7651-99-2 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 7651-99-2 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.