The SNOB 1 Reagent is primarily used in biochemical research to study S-nitrosylation, a post-translational modification of proteins where nitric oxide (NO) is added to cysteine residues. This reagent is instrumental in identifying and analyzing S-nitrosylated proteins, which play critical roles in cellular signaling and regulation. Researchers employ it to investigate the impact of S-nitrosylation on protein function, interactions, and stability, particularly in the context of diseases such as cardiovascular disorders, neurodegenerative conditions, and cancer. Additionally, it aids in understanding the role of nitric oxide in various physiological and pathological processes, making it a valuable tool in drug discovery and therapeutic development.