Amygdalin is a cyanogenic glycoside naturally obtained from bitter almond seeds (semen armeniacae amarae) Chemically it consists of two sugar molecules (glucose) benzaldehyde and a nitrile group forming a stable glycosidic compound that releases hydrogen cyanide (HCN) upon enzymatic hydrolysis The compound s biological action is mediated through enzymatic cleavage by cellular -glucosidase primarily resulting in cyanide liberation and subsequent cytotoxicity In biomedical research amygdalin is extensively applied in studies focused on tumor cell viability apoptosis induction mechanisms and cyanide toxicity effects in various cellular and animal models Additionally it serves as an experimental substrate for enzyme kinetics studies investigating -glucosidase or glycoside hydrolase activity and as a reference compound in analytical assay development within biochemical and toxicological methodologies