4nitropyridine

4-Nitropyridine is an organic compound with the chemical formula C5H4N2O2. It is a derivative of pyridine, where a nitro group (NO2) is attached to the carbon atom at the 4-position of the pyridine ring. The compound typically appears as a yellow crystalline solid.

This compound is primarily used as a reagent in organic synthesis. Its electrophilic nitro group makes it susceptible to nucleophilic aromatic substitution reactions. 4-Nitropyridine can be employed in the preparation of various pyridine derivatives, including pharmaceuticals and agrochemicals. It also serves as a precursor for the synthesis of other functionalized pyridines. The reduction of the nitro group can lead to the formation of 4-aminopyridine, another important chemical intermediate.

4-Nitropyridine is moderately soluble in organic solvents. Its handling requires standard laboratory precautions for organic chemicals. Like many nitroaromatic compounds, it should be stored in a cool, dry place away from sources of ignition and incompatible materials. Information regarding its specific toxicological properties and environmental impact is available in chemical safety data sheets.