Rhenium Re 186 Etidronate

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

**Definition:** An synthetic compound containing the organic phosphonate hydroxyethylidene diphosphonate (HEDP) labeled with the radioisotope rhenium Re 186. Re-186 etidronate binds to hydroxyapatite in bone, delivering a cytotoxic dose of beta radiation to primary and metastatic bone tumors. Re-186 is a beta emitter with a short half-life, a radioisotope profile that provides localized antitumor radiocytotoxicity while sparing extramedullary bone marrow tissues.

**Synonyms:** - 186Re-Etidronate - RHENIUM RE-186 ETIDRONATE - Re 186 Hydroxyethylidene Diphosphonate - Re-186 HEDP - Re-186 Hydroxyethylidene Diphosphonate - Rhenium Re-186 Hydroxyethylidene Diphosphonate - Rhenium-186 HEDP