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An iodine I-123 conjugate of metomidate (MTO) with potential application in adrenal imaging. Metomidate is a potent and selective inhibitor of the cytochrome P-450 enzymes, especially CYP11B1 (11 beta-hydroxylase) and CYP11B2 (aldosterone synthase). Because both CYP11B1 and CYP11B2 are expressed exclusively in the adrenal cortex, I-123 iodometomidate can be used as a radiotracer for adrenal scintigraphy. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C69137\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C69137\' NCI Thesaurus)
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