title: Purity of the adrenal-scanning agents, 19-iodocholesterol and 6-iodomethylnorcholesterol.
mesh_terms: D000311:Adrenal Glands; D002784:Cholesterol / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000302:isolation & purification; D003287:Contrast Media / Q000138:chemical synthesis* / Q000302:isolation & purification; D006801:Humans; D007457:Iodine Radioisotopes; D011877:Radionuclide Imaging; D013261:Sterols / Q000138:chemical synthesis* / Q000302:isolation & purification
chemical_list: D003287:Contrast Media; D007457:Iodine Radioisotopes; D013261:Sterols; D002784:Cholesterol