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- W1990496817 abstract "beta-CIT (2 beta-carbomethoxy-3 beta-(4-iodophenyl)tropane) is a cocaine analogue with a high affinity for the dopamine transporter. [11C] beta-CIT was prepared by N-methylation of nor-beta-CIT with [11C]methyl iodide. The total radiochemical yield of [11C] beta-CIT was 40-50% with an overall synthesis time of 35-40 min. The radiochemical purity was > 99% and the specific radioactivity at the time of injection was about 1000 Ci/mmol (37 GBq/mumol). Autoradiographic examination of [11C] beta-CIT binding in human brains post-mortem demonstrated a high level of specific binding in the striatum. PET examination of [11C] beta-CIT in a Cynomolgus monkey showed a marked accumulation of radioactivity in the striatum. The ratio of radioactivity in the striatum-to-cerebellum approached 5 after 87 min. In a displacement experiment, radioactivity in the striatum but not in the cerebellum, was markedly reduced after injection of unlabelled cocaine. [11C] beta-CIT has a potential as ligand for PET examination of cocaine effects in man." @default.
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- W1990496817 date "1993-04-01" @default.
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- W1990496817 title "[11C]β-CIT, a cocaine analogue. Preparation, autoradiography and preliminary PET investigations" @default.
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- W1990496817 doi "https://doi.org/10.1016/0969-8051(93)90045-v" @default.
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