... Piperidine, free radical 4-Hydroxy TEMPO, CAS NO.: 2226-96-2 4-Hydroxy TEMPO, free radicalChemical name: 4-Hydroxy - ... 6, 6-Tetramethyl Piperidine, free radical4-Hydroxy TEMPO, CAS: 2226-96-2, Hydroxy TEMPO4-Hydroxy -2, 2, 6, 6-Tetramethyl ... formula: C9H18NO2Molecular weight: 172.25CAS NO.: 2226-96-2Specifications:Appearance: crystalMelting point: 68-72CAssay: 98.0% minMoisture: 0.5% maxAsh: 0. ...