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Nichols DE, Frescas SP, Chemel BR, Rehder KS, Zhong D, Lewin AH. 
“High specific activity tritium-labeled N-(2-methoxybenzyl)-2,5-dimethoxy-4-iodophenethylamine (INBMeO): a high-affinity 5-HT2A receptor-selective agonist radioligand”. 
Bioorg Med Chem. 2008 Jun 05;16(11):6116-23.
The title compound ([3H]INBMeO) was prepared by an O,O-dimethylation reaction of a t-BOC protected diphenolic precursor using no carrier added tritiated iodomethane in DMF with K(2)CO(3). Removal of the t-BOC protecting group and purification by HPLC afforded an overall yield of 43%, with a radiochemical purity of 99% and specific activity of 164Ci/mmol. The new radioligand was suitable for labeling human 5-HT(2A) receptors in two heterologous cell lines and had about 20-fold higher affinity than [(3)H]ketanserin.

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