A small sample of warm petroleum ether is recrystallized, and the black needles thus obtained are filtered by means of Buchner filtration, washed with cold petroleum ether, and dried in a vacuum ...

Signal dispersion plays a key role, specifically in hydrogen-1 NMR (1 H NMR), due to the small scope of the chemical shift range. Similar to the signal-to-noise ratio, this is directly associated ...