Stearic Acid

Stearic Acid (CAS No.: 57-11-4) is a long-chain saturated fatty acid widely distributed in animal and ??????-derived lipids, including cocoa butter, beef fat, and various vegetable oils, and is commonly encountered as a waxy solid under ambient conditions. As a biologically relevant lipid, stearic acid is extensively utilized in metabolic and cardiovascular research, where it exhibits distinct physiological properties compared to other saturated fatty acids, notably its minimal impact on plasma LDL-cholesterol levels. Mechanistically, it has been reported to influence adipose tissue homeostasis by promoting apoptosis of preadipocytes, thereby contributing to reductions in visceral fat accumulation, and is implicated in pathways governing lipid metabolism, cellular differentiation, and energy balance. In vitro studies typically employ stearic acid in the low micromolar to millimolar concentration range to investigate its effects on lipid signaling, mitochondrial function, and apoptosis-related pathways, although precise activity profiles depend on cell type and experimental conditions. In biomedical research, it serves as a valuable tool compound in studies of obesity, insulin sensitivity, and cardiometabolic disorders, and is also used in formulation science and lipid-based drug delivery investigations. Experimental concentrations or dosing regimens vary according to specific study designs, reflecting its role as both a metabolic substrate and a modulator of lipid-associated signaling networks.