Strontium Chloride Sr-89

**Semantic type:** Pharmacologic Substance

**Definition:** The chloride salt of a radioactive isotope of strontium. Strontium chloride Sr 89 is taken up and incorporated preferentially in metastatic lesions in bone where it emits cytotoxic beta radiation, resulting in an inhibition and/or reduction of tumor growth and so tumor-related bone pain. (NCI04)

**Synonyms:** - Metastron - STRONTIUM CHLORIDE SR-89 - strontium chloride Sr 89