2,4-Dinitrophenol is an organic compound with the formula HOC6H3(NO2)2. It is a yellow, crystalline solid that has a sweet, musty odor. It sublimes, is volatile with steam.
2,4-Dinitrophenol is called as an uncoupler of oxidative phosphorylation, which can prevent adenosine triphosphate(ATP) synthesis, but it permits electron transfer to proceed.