Used as a catalyst in organic synthesis, particularly in oxidation reactions of alcohols to aldehydes or ketones. Commonly applied in combination with co-oxidants like bleach or sodium hypochlorite under mild conditions. Widely employed in industrial and laboratory settings for selective oxidations due to its efficiency and stability. Also serves as a radical scavenger and spin label in biochemical and polymer studies to probe molecular structure and dynamics. Plays a role in controlled radical polymerization techniques, enhancing precision in polymer architecture.