Used as a key intermediate in the synthesis of disulfide-containing pharmaceuticals, particularly in developing drugs that target oxidative stress-related conditions. Its pyridinyl disulfide group enables reversible disulfide bond formation, making it valuable in prodrug design and bioconjugation techniques. Commonly applied in controlled release systems and in the development of redox-sensitive drug delivery carriers. Also utilized in research for creating thiol-activatable compounds in biochemical assays and diagnostic tools.