4-Phosphonooxy-2,2,6,6-tetramethylpiperidine-1-oxyl hydrate

4-膦酰氧基-2,2,6,6-四甲基-1-哌啶氧基自由基水合物

Also known as: 4-Phosphonooxy-TEMPO hydrate, free radical, 4-Phosphonooxy-2,2,6,6-tetramethyl-1-piperidinyloxy, free radical hydrate, (1-Oxyl-2,2,6,6-tetramethyl-4-piperidyl)-phosphat, (1-λ1-oxidanyl-2,2,6,6-tetramethylpiperidin-4-yl) dihydrogen phosphate, hydrate, 2,2,6,6-tetramethyl-4-phosphoxy-1-piperidinyloxyl, MFCD00167296

4-Phosphonooxy-2,2,6,6-tetramethylpiperidine-1-oxyl hydrate (CAS 22690-04-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H21NO6P and a molecular weight of 270.24000 g/mol. It is also known as 4-Phosphonooxy-TEMPO hydrate, free radical, 4-Phosphonooxy-2,2,6,6-tetramethyl-1-piperidinyloxy, free radical hydrate and (1-Oxyl-2,2,6,6-tetramethyl-4-piperidyl)-phosphat. Key properties include a melting point of 270ºC, a boiling point of 398.6ºC at 760mmHg and a flash point of 194.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

22690-04-6

Jingsj CID

J-27833-3

Molecular Formula

C₉H₂₁NO₆P

Chinese Name

4-膦酰氧基-2,2,6,6-四甲基-1-哌啶氧基自由基水合物

Molecular Weight

270.24000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026