CH3NO2, commonly known as methyl nitrite, is a chemical compound composed of carbon, hydrogen, nitrogen, and oxygen. It is a colorless liquid at room temperature and has a sweet, fruity odor. This compound is often used in organic synthesis and as a reagent in various chemical reactions. Methyl nitrite is also known for its role as a vasodilator, which means it can widen blood vessels. It is sometimes used in medical applications, particularly in the treatment of certain heart conditions. However, it should be handled with care due to its potential toxicity and flammability.