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CAS Number：4075/7/4
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SMILES：IntroductionCAS 4075-07-4 is a chemical compound with the molecular formula C6H5NO2S. It is also known as 4-Nitrophenylsulfenyl chloride or NPSCl. This chemical compound is widely used in various applications due to its unique properties.Chemical PropertiesCAS 4075-07-4 is a yellow crystalline solid with a melting point of 70-72 ??C. It is soluble in common organic solvents such as acetone, chloroform, and ethyl acetate. This compound is highly reactive and can react with various nucleophiles such as amines, alcohols, and thiols. NPSCl is also sensitive to moisture and should be stored in a dry place.ApplicationsCAS 4075-07-4 is widely used in the synthesis of various organic compounds. It is commonly used as a reagent in peptide synthesis and as a protecting group for amines. NPSCl is also used in the synthesis of dyes, pharmaceuticals, and agrochemicals. In addition, it is used in the detection of thiols and in the preparation of thiol-modified surfaces.Safety ConsiderationsCAS 4075-07-4 is a hazardous substance and should be handled with care. It is corrosive and can cause severe skin and eye irritation. Inhalation of this compound can cause respiratory irritation and lung damage. It is important to use appropriate personal protective equipment when handling NPSCl and to follow proper storage and disposal procedures.ConclusionCAS 4075-07-4 is a useful chemical compound with a variety of applications in organic synthesis and other fields. Its unique properties make it a valuable reagent in many chemical reactions. However, it is important to handle this compound with care due to its hazardous nature.