5-methyl-1-nitrosopyridin-2(1H)-one

5-methyl-1-nitrosopyridin-2(1H)-one is a chemical compound that is commonly used in scientific research. Its chemical formula is C6H6N2O2 and it has a molecular weight of 138.12 g/mol. This compound is also known as MNPO or 5-methyl-2(1H)-pyridinone 1-oxide. The primary use of 5-methyl-1-nitrosopyridin-2(1H)-one is as a nitroxyl radical source in medicinal chemistry. Nitroxyl radicals are important intermediates in many chemical reactions and are useful in the synthesis of various organic compounds. The compound has also been used in the preparation of various pyridine derivatives and as a starting material for the synthesis of new drugs. The chemical properties of 5-methyl-1-nitrosopyridin-2(1H)-one include a melting point of 123-124 °C and a boiling point of 160-165 °C. It is soluble in common organic solvents such as ethanol, methanol, and acetone. The compound is relatively stable under normal laboratory conditions, although it may decompose over time when exposed to air and light. In summary, 5-methyl-1-nitrosopyridin-2(1H)-one is a valuable compound in medicinal chemistry research due to its ability to act as a nitroxyl radical source. Its chemical properties make it a useful starting material for the synthesis of various pyridine derivatives and new drugs.