4hüdroksinonenaal

4-Hydroxynonanal is an organic compound with the chemical formula C9H18O2. It is a type of aldehyde, specifically a hydroxyaldehyde, meaning it contains both an aldehyde functional group and a hydroxyl group. The hydroxyl group is located at the fourth carbon atom from the aldehyde group in the nonanal chain. This structure gives it unique chemical properties.

4-Hydroxynonanal can exist in different forms due to the presence of both an aldehyde and a hydroxyl group. It can undergo cyclization, forming hemiacetals. This internal reaction occurs when the hydroxyl group attacks the carbonyl carbon of the aldehyde, creating a six-membered ring structure. This equilibrium between the open-chain form and the cyclic hemiacetal form is characteristic of hydroxyaldehydes.

This compound has been studied in various biochemical contexts. It is known to be a product of lipid peroxidation, particularly the oxidation of polyunsaturated fatty acids. This process can generate reactive aldehydes that may contribute to cellular damage. Researchers have investigated its role in oxidative stress and its potential as a biomarker for certain conditions. Its presence in biological systems is often linked to metabolic pathways and oxidative damage.