179485

4-Oxo-TEMPO

• Synonyme(s) : 4-Oxo-2,2,6,6-tetramethyl-1-piperidinyloxy, free radical
• Formule empirique (notation de Hill) : C₉H₁₆NO₂
• CAS Number: 2896-70-0
• Poids moléculaire : 170.23
• Numéro CE : 220-778-7
• Numéro MDL: MFCD00006187
• Code UNSPSC : 12352000
• ID de substance PubChem : 24850816
• Nomenclature NACRES : NA.22

Propriétés

• Forme: solid
• Niveau de qualité: 100
• Groupe fonctionnel: ketone
• Température de stockage: 2-8°C
• Chaîne SMILES: CC1(C)CC(=O)CC(C)(C)N1[O]
• InChI: 1S/C9H16NO2/c1-8(2)5-7(11)6-9(3,4)10(8)12/h5-6H2,1-4H3
• Clé InChI: WSGDRFHJFJRSFY-UHFFFAOYSA-N

Description

Description générale

4-Oxo-TEMPO is formed by the reaction of 2,2,6,6-tetramethyl-4-piperidone (4-oxo-TMP) and ¹O₂. It is a stable paramagnetic product formed during the irradiation of TiO₂ in aqueous suspensions.

Application

4-Oxo-TEMPO was employed as nitroxide standard to investigate the generation of singlet oxygen by photoexcited TiO₂ in ethanol by ESR spectroscopy. It may be employed as free radical polarizing agent in dynamic nuclear polarization (DNP) studies.

Free-radical nitroxide spin probe typically used for:

• Redox sources for anodes in lithium secondary batteries
• Free-radical biological studies
• Radical spin-trapping
• Electron paramagnetic resonance studies
• Polymer chemisty and synthesis applications

Informations sur la sécurité

• Pictogrammes: GHS09
• Mention d'avertissement: Warning
• Mentions de danger: H400
• Conseils de prudence: P273
• Classification des risques: Aquatic Acute 1
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)