bis(p-methoxyphenyl)iodonium bromide (Di(p-anisyl)iodonium Bromide) is a bromide salt consisting of two p-methoxyphenyl iodonium molecules linked together by a bromide ion. It has been used as a reagent in the synthesis of polymers, in the preparation of nanoparticles and in the synthesis of organic dyes. It has also been used to study the structure and reactivity of organic molecules and to study the structure and reactivity of inorganic molecules.