Pesticide Intermediates

Nucleoside hydroxyl and amino protection reagents, organic synthesis, pharmaceutical synthesis intermediates.

Dimethyl Sulfate is an odorless, corrosive, oily liquid with an onion-like odor that emits toxic fumes upon heating. Dimethyl sulfate is used in industry as a methylating agent in the manufacture of many organic chemicals. Inhalation exposure to its vapors is highly irritating to the eyes and lungs and may cause damage to the liver, kidney, heart and central nervous system, while dermal contact causes severe blistering. It is a possible mutagen and is reasonably anticipated to be a human carcinogen based on evidence of carcinogenicity in experimental animals.

Phenyl dichloride phosphate is used as an intermediate in organic synthesis and as a dehydrating agent in the oxidation reaction of dimethyl sulfoxide. It is widely used in the synthesis of oxide intermediate of biological pesticide Emamectin and veterinary drug acetaminoavermectin.

3-indole-3-carboxylic acid is an intermediate of organic synthesis and medicine, which can be used in laboratory organic synthesis process and chemical medicine research and development process.

Thionyl chloride is a colorless or yellowish liquid under normal temperature and pressure. It has a pungent odor and is easy to decompose into sulfur dioxide and hydrogen chloride when meeting water. It is dissolved in benzene, chloroform and carbon tetrachloride and heated to 150 ℃ ° C starts to decompose, 500 °C is completely decomposed. Thionyl chloride can react with hydroxyl phenol or alcohol to form corresponding chloride; It reacted with Grignard reagent to form corresponding sulfoxide compounds. The molecular configuration of thionyl chloride is conical, in which the sulfur (VI) center contains a pair of lone pair electrons. Thionyl chloride is an important organic chemical intermediate, which is mainly used in medicine, pesticide, dye industry and organic synthesis industry as chlorinating agent. Pesticide industry is the main consumption field of thionyl chloride in China, which is mainly used in the production of antipotamide, pentrin, fenvalerate, fenvalerate, fenpropathrin, fenpropathrin, Isocarbophos, fenpropathrin, endosulfan, deltamethrin, methoxychlorpyrifos, oxazolidone, quizalofop and warfarin. Because thionyl chloride can strongly react with water, it can also react with hydrated salt of metal chloride to produce anhydrous metal chloride.