4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl

4-羟基-2,2,6,6-四甲基哌啶-1-氧自由基

Also known as: 4-Hydroxy-TEMPO, 4-Hydroxy-2,2,6,6-tetramethylpiperidinyloxy, 4-Hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl, TEMPOL, 4-Piperidinol, 2,2,6,6-tetramethyl-, 1-oxide, 2,2,6,6-Tetramethyl-4-piperidinol 1-oxyl, 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl free radical

4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl (CAS 3637-10-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H19NO2 and a molecular weight of 173.25300 g/mol. It is also known as 4-Hydroxy-TEMPO, 4-Hydroxy-2,2,6,6-tetramethylpiperidinyloxy and 4-Hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl. Key properties include a melting point of 69-71ºC(lit.), a boiling point of 260.2ºC at 760 mmHg, a density of 1.029 g/cm3 and a flash point of 111ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3637-10-3

Jingsj CID

J-1184231-0

Molecular Formula

C₉H₁₉NO₂

Chinese Name

4-羟基-2,2,6,6-四甲基哌啶-1-氧自由基

Molecular Weight

173.25300 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026