C7H5ClO2S

C7H5ClO2S is the molecular formula for several chemical compounds, most notably 4-chlorobenzenesulfinic acid. This organic compound is a derivative of benzenesulfinic acid, where a chlorine atom is substituted at the para position of the benzene ring. In its pure form, 4-chlorobenzenesulfinic acid is typically a white crystalline solid. It is a member of the organosulfur family of chemicals.

The properties of C7H5ClO2S are influenced by the presence of the sulfinic acid functional group (-SO2H) and the chlorine atom. The sulfinic acid group makes it a moderately strong acid, capable of donating a proton. The chlorine atom, being an electron-withdrawing group, can affect the reactivity of the benzene ring and the acidity of the molecule.

C7H5ClO2S can be synthesized through various chemical routes, often involving the reduction of corresponding sulfonyl chlorides or the oxidation of thiophenols. It finds application as a reagent in organic synthesis. Its ability to participate in redox reactions and act as a nucleophile makes it useful in the preparation of other organic compounds. The specific applications depend on the precise isomer and purity of the compound.