Abstract
The standard high pressure liquid chromatography (HPLC) method for determining radiochemical purity (RCP) of [ 131I] m-iodobenzylguanidine ([ 131I] mIBG) is cumbersome and time-consuming. A simplified and rapid separation method with the use of a reverse-phase extraction chromatography technique ( i.e. Sep-Pak ® C18 [SPC] cartridge) is described. The new SPC system closely correlates ( r = 0.99) to the standard HPLC method, and the time to complete the SPC analysis is less than 5 min.
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