Lexidronam Pentasodium

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** 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.

**Synonyms:** - EDTMP Pentasodium Salt - LEXIDRONAM PENTASODIUM - Lexidronam Pentasodium Salt - Pentasodium Ethylenediamine Tetramethylene Phosphonate