4-hydroxy-2 2 6 6-tetramethyl-piperidinooxy July 8, 2019 16 32 64 128 4-hydroxy-2 2 6 6-tetramethyl-piperidinyl 4-piperidinol 1-hydroxy-2 2 6 6-tetramethyl- 4-hydroxy-2 2 6 6-tetramethyl-1-piperidine ethanol 1-hydroxy-2 2 6 6-tetramethylpiperidine 4-hydroxy-2 2 6 6-tetramethylpiperidine-1-oxyl
