1,3-Propylene diisothiocyanate (CAS 109704-32-7)

1,3-Propylene diisothiocyanate is a colorless liquid with a pungent odor, widely employed in scientific research endeavors. This versatile compound serves as a cross-linking agent, fluorescent labeling reagent, and protein modification reagent. 1,3-Propylene diisothiocyanate finds broad utility across various scientific research applications. Primarily, it functions as a cross-linking agent for proteins and nucleic acids. Through its reaction with primary amines in proteins, stable thioether bonds are formed, facilitating the investigation of protein-protein interactions, protein-DNA interactions, and protein-ligand interactions. Moreover, 1,3-Propylene diisothiocyanate can serve as a fluorescent labeling reagent for proteins and peptides. Its isothiocyanate group reacts with primary amines in proteins, yielding highly fluorescent adducts suitable for protein localization and quantification. The mechanism of action underlying 1,3-Propylene diisothiocyanate is predicated on its ability to react with primary amines in proteins, leading to the formation of stable thioether bonds. The isothiocyanate group in 1,3-Propylene diisothiocyanate reacts with the primary amine group in the protein, generating a thiourea intermediate, which subsequently rearranges to establish a durable thioether bond.