Galvinoxyl free radical is widely used as a stable radical in various scientific studies, particularly in the field of chemistry and materials science. It serves as a standard in electron paramagnetic resonance (EPR) spectroscopy for calibrating instruments and studying radical reactions. Its stability makes it valuable for investigating the mechanisms of free radical processes, including polymerization and oxidation reactions. Additionally, it is employed in antioxidant research to assess the radical scavenging activity of compounds, helping to evaluate their potential in preventing oxidative damage in biological systems and industrial applications.