Linustatin is a cyanogenic glycoside primarily found in flaxseeds (Linum usitatissimum). Chemically, it consists of a gentiobioside linked to acetone cyanohydrin. Upon enzymatic hydrolysis by β-glucosidases, linustatin releases hydrogen cyanide (HCN), glucose, and acetone, serving as a natural plant defense mechanism against herbivores and pathogens. As a research reagent (≥98% purity), it is used in biochemical studies of cyanogenesis, plant physiology, toxicology, and enzyme kinetics. While flaxseeds are nutritious, cyanogenic glycosides like linustatin can pose cyanide toxicity risks if not properly processed, and their direct health benefits remain under investigation, including potential antioxidant effects from hydrolysis products. Handling requires caution due to HCN release potential.