title: Purification of carbon-11 PET radiotracers from unlabeled precursors by preparative HPLC and SPE.
abstract: A general methodology for the rapid purification of carbon-11 positron emission tomography (PET) radiotracers from radiolabeling reaction mixtures has been developed. Preparative HPLC and solid-phase extraction (SPE) techniques are described which can separate some commonly used radiopharmaceuticals such as [(11)C]raclopride, [(11)C]beta-CFT and [(11)C]choline from their unlabeled precursors.
authors.affiliation: Department of Radiology, Indiana University School of Medicine, 1345 West 16th Street, L-3 Room 202, Indianapolis, IN 46202-2111, USA. qzheng@iupui.edu
authors.forename: Qi-Huang
authors.initials: QH
authors.lastname: Zheng
authors.forename: Bruce H
authors.initials: BH
authors.lastname: Mock
mesh_terms: D002250:Carbon Radioisotopes / Q000737:chemistry / Q000302:isolation & purification*; D005591:Chemical Fractionation / Q000379:methods; D002794:Choline / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003042:Cocaine / Q000031:analogs & derivatives / Q000737:chemistry; D049268:Positron-Emission Tomography; D020891:Raclopride / Q000737:chemistry; D019275:Radiopharmaceuticals / Q000138:chemical synthesis / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D002250:Carbon Radioisotopes; D019275:Radiopharmaceuticals; D020891:Raclopride; C021279:(1R-(exo,exo))-3-(4-fluorophenyl)-8-methyl-8- azabicyclo(3.2.1)octane-2-carboxylic acid, methyl ester; D003042:Cocaine; D002794:Choline