Used in plant defense mechanisms, this compound acts as a phytoalexin, helping protect against fungal and microbial infections. It accumulates in plant tissues under stress, such as pathogen attack or UV exposure, reinforcing cell walls and inhibiting pathogen growth. Commonly found in species like potatoes and tomatoes, it contributes to natural disease resistance. Also studied for antioxidant properties, with potential applications in natural preservatives and functional foods. Research explores its role in signaling pathways that regulate plant immune responses.