This product can be used as the key intermediate in the synthesis of biphenyl Diphenylacetylene fluorescent brighteners CBS-X and cbs-127. It can also be used as the intermediate of medicine or resin. It is the raw material for the synthesis of high-grade fluorescent brighteners and electronic chemicals. It is an important intermediate of fluorescent brighteners FP and CBS. It can also be used in the intermediate of medicine or resin.