L-selectride is an organometallic compound, the appearance is colorless crystalline solid, industrial products are generally light yellow transparent liquid, supplied in solution form. It is an organoborane that is used as an excellent, mild and highly selective reducing agent in organic synthesis. It is a representative of the Selectride family and has a good solubility. Insoluble in non-polar solvents at room temperature, but soluble in polar solvents such as ether, methanol and acetonitrile. It can be used as a boron source to participate in C-C bond formation reactions in organic synthesis, such as Grignard reaction, arylene reaction and cyclocynization reaction. In addition, it can also be used as a reducing agent in organic synthesis for hydrogenation reactions and dehalogenation of halogenated hydrocarbons.