4-Hydroxy-2,2,6,6-tetramethylpiperidinooxy (4-Hydroxy-TEMPO, TEMPOL, free radical)4-Hydroxy-2,2,6,6-tetramethylpiperidinooxy (4-hydroxy-TEMPO, TEMPOL) ≥98% free radical
: VWR Collection
: VWR Chemicals
: Merck