Aromatic radiofluorination with [18F]fluorine gas: 6-[18F]fluoro-L-dopa.
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A new synthesis is described for the routine production of 3,4-dihydroxy-6-[18F]fluoro-phenyl-L-alanine (6-[18F]fluoro-L-dopa). The reaction between [18F]fluorine gas and 3,4-dihydroxyphenyl-L-alanine (L-dopa) in liquid hydrogen fluoride gave 2-, 5-, and 6-[18F]fluoro-L-dopa. 6-[18F]Fluoro-L-dopa was isolated by reverse-phase high-pressure liquid chromatography. From 100 mCi [18F]F2, the method produces 3 mCi of 6-[18F]fluoro-L-dopa at the end of synthesis.
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