Sources of carbon which decrease the specific activity of [11C]CH3I synthesized by the single pass I2 method - PubMed (original) (raw)

Sources of carbon which decrease the specific activity of [11C]CH3I synthesized by the single pass I2 method

Ming-Rong Zhang et al. Appl Radiat Isot. 2005 Mar.

Abstract

The sources of carbon, which decrease the specific activity of [11C]Methyl iodide [11C]CH3I synthesized by the single pass I2 method were, determined. Some organic solvents (acetone, CH3OH and THF etc.) and non-volatile oils (silicone oil and paraffin) could react with the I2 vapor to yield the non-radioactive CH3I in the heated quartz tube, which decreased the specific activity of [11C]CH3I significantly.

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