<P> The reaction can also be used to determine the number of methoxy (- OCH) groups, by distilling the iodomethane into a solution of silver nitrate, which precipitates silver iodide . By filtering and weighing this precipitate it is possible to calculate the number of iodine atoms and hence methoxy groups . </P> <P> Synthetic applications: </P>

The number of methoxy groups in a compound can be determined by treating it with