3-Carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy

3-羧基-2,2,5,5-四甲基-1-吡咯烷基氧基自由基

Also known as: 3-Carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (free radical), 3-Carboxy-PROXYL, 3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-oxyl, 3-Carboxy-2,2,5,5-tetramethylpyrrolidin-N-oxyl, 3-Carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy radical, 2,2,5,5-Tetramethyl-3-carboxypyrrolidine-N-oxyl, 1-Oxyl-2,2,5,5-tetramethylpyrrolidine-3-carboxylic acid

3-Carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (CAS 2154-68-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H17NO3 and a molecular weight of 187.236 g/mol. It is also known as 3-Carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (free radical), 3-Carboxy-PROXYL and 3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-oxyl. Key properties include a melting point of 200ºC (dec.), a boiling point of 307.2±31.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 139.6±24.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

2154-68-9

Jingsj CID

J-46724-3

Molecular Formula

C₉H₁₇NO₃

Chinese Name

3-羧基-2,2,5,5-四甲基-1-吡咯烷基氧基自由基

Molecular Weight

187.236 g/mol

Category

Aliphatic Hydrocarbons

Last updated

8/21/2026