Enzymatic synthesis of [11C]N‐acetylserotonin
- 1 March 1990
- journal article
- research article
- Published by Wiley in Journal of Labelled Compounds and Radiopharmaceuticals
- Vol. 28 (3) , 311-320
- https://doi.org/10.1002/jlcr.2580280308
Abstract
An enzymatic synthesis of [11C] N‐acetylserotonin is described. [1‐11C] acetate is produced by reacting 11CO2 with methylmagnesium bromide and converted to [11C]acetylCoA by passage over a first enzyme reactor containing immobilized acetylcoenzyme A synthetase. The produced [11C]‐acetylCoA is converted to [11C]N‐acetylserotonin with a second enzyme reactor containing immobilized acetylcoenzyme A: arylamine N‐acetyltransferase. The labelled end product is purified by means of ionexchange chromatography and is obtained in a solution suitable for intravenous injection.After irradiation with 18 MeV protons at 15 μA for 20 min, 25 mCi with a specific activity of 250 mCi/μmol were obtained. The whole synthesis starting from EOB takes 40 min.Keywords
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