Abstract
AbstractThis paper describes a simple, rapid synthesis of caffeine‐1,7‐13CH3 produced by the reaction of iodomethane‐13C with 3‐methylxanthine. The synthesis is complete in one day, requires only the most rudimentary laboratory equipment, and is amenable to large scale synthesis. Overall yield after product isolation is 82%, and the product is of 99% chemical purity and 99% isotopic purity.
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