Process for the preparation of radioactive labeled estradiol
申请人:Baranczuk J. Richard
公开号:US20070059239A1
公开(公告)日:2007-03-15
A method for producing a high yield of an estradiol labeled at the 16-alpha position thereof with a radioactive iodine, especially
123
I, for use as an imaging agent. The method includes the step of mixing a source of
123
I sodium iodine with 16-beta-bromoestradiol-17-beta and benzo-15-crown-5-ether in a water and organic solvent solution and heating under controlled temperature in the range from 90 to 120° Centigrade for sufficient time to react the iodide with the estradiol. Thereafter, resulting 16-alpha-123I iodoestradiol-17-beta is separated from the resultant mixture using high pressure liquid chromatography and then sterilized.