hexadecanedioate

hexadecanedioate (CAS No.: 505-54-4) is a long-chain dicarboxylic fatty acid derivative broadly utilized in biochemical and biomedical research as both a functional affinity ligand and a bioactive metabolic regulator. It can be covalently immobilized onto chromatographic matrices such as Sepharose 4B to generate affinity media that exploit the natural binding interactions between fatty acids and serum albumin, enabling highly selective capture and depletion of serum albumin from human plasma and related biological samples, thereby improving downstream analytical sensitivity and proteomic profiling. Biologically, hexadecanedioate is associated with microbial metabolism and plant-derived lipid polymers and has been shown to modulate key cellular stress and metabolic pathways, including inhibition of IRE1α-XBP1s signaling and ferroptosis, downregulation of XBP1 and Hrd1 expression, and activation of the Nrf2/SLC7A11/GPX4 antioxidant axis. In mitochondrial systems, it enhances respiratory activity and attenuates reactive oxygen species generation under stress conditions, supporting its role in redox homeostasis studies. These activities typically manifest in the micromolar concentration range in vitro, although effective concentrations vary depending on assay design and biological context. Consequently, hexadecanedioate is widely applied in studies of metabolic-associated liver disease, oxidative stress, lipid signaling, and protein purification workflows, as well as in the development of selective affinity materials and mechanistic investigations in cell-based and preclinical models.