Used as a high-performance stabilizer in polymers, especially in engineering plastics and synthetic fibers, to protect against thermal and oxidative degradation during processing and long-term use. Exhibits excellent compatibility with polyamides and polyesters, maintaining material integrity under high-temperature conditions. Also employed in specialty coatings and adhesives requiring extended service life under UV and heat exposure. Its complex structure provides superior radical scavenging and hydroperoxide decomposing activity, making it effective in multi-functional stabilization systems.