Radiotracer vorozole compounds for in vivo and in vitro assaying, studying and imaging cytochrome P450 aromatase enzymes in humans, animals, and tissues and methods for making and using the same are provided. [N-radio-methyl] vorozole substantially separated from an N-3 radio-methyl isomer of vorozole is provided. Separation is accomplished through use of chromatography resins providing multiple mechanisms of selectivity.
This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy and sponsored by the National Institutes of Health under grant number KO5 DA 020001. The Government has certain rights in the invention.