mchloroperoxybenzoic

m-Chloroperoxybenzoic acid, also known as MCPBA, is a chemical compound with the formula C6H4ClO3. It is a white crystalline solid that is commonly used as a mild oxidizing agent in organic chemistry. MCPBA is typically prepared by the reaction of peroxybenzoic acid with thionyl chloride, which selectively chlorinates the para position of the aromatic ring. This compound is highly selective and is often used in the oxidation of alkenes to form epoxides. It is also used in the synthesis of various organic compounds, including pharmaceuticals and agrochemicals. MCPBA is relatively stable and can be stored at room temperature, but it should be handled with care due to its potential to release chlorine gas upon decomposition. The compound is soluble in organic solvents such as dichloromethane and chloroform, but insoluble in water. Its use is regulated in some countries due to its potential environmental impact.