Isopentenol: 3-methyl-2-butene-1-ol. Isopentenol is mainly used for the synthesis of methyl pentanoate, the intermediate of pyrethroid insecticide with high efficiency and low toxicity, and its downstream products, such as dichlorantherin and DV pyrethroid chloride. With the continuous research and maturity of isopentenol synthesis process and the deepening of application and development, its application in pesticides will be expanded With the continuous expansion, the market demand will also rise sharply. Isopentenol is the raw material of methyl pentanoate, an important precursor for the synthesis of pyrethroids. The condensation Claisen rearrangement was carried out to form methyl pentanoate. Another use of isopentenol is the main intermediate of polycarboxylate superplasticizer TPEG. Isopentenol is an important raw material for the production of polycarboxylate cement superplasticizer. Using this kind of high performance cement water reducer in concrete production and construction can reduce the water consumption by more than 30%, enhance the strength of concrete by more than 30%, and reduce the cement consumption accordingly.