2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid

2,2,5,5-四甲基-3-吡咯啉-1-氧基-3-羧酸

Also known as: 3-Carboxy-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy radical, 2,2,5,5-Tetramethyl-3-pyrroline-1-oxyl-3-carboxylic acid, PCAOL, CTPC, 3-Carboxy-DPRO, 3-Carboxy-dehydro-PROXYL, 1-Oxy-2,2,5,5-tetramethylpyrroline-3-carboxylic acid, 1H-Pyrrol-1-yloxy, 3-carboxy-2,5-dihydro-2,2,5,5-tetramethyl-

2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl-3-carboxylic acid (CAS 2154-67-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H14NO3 and a molecular weight of 184.21200 g/mol. It is also known as 3-Carboxy-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy radical, 2,2,5,5-Tetramethyl-3-pyrroline-1-oxyl-3-carboxylic acid and PCAOL. Key properties include a melting point of 202ºC, a boiling point of 311.6ºC at 760 mmHg and a flash point of 142.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

2154-67-8

Jingsj CID

J-29999-8

Molecular Formula

C₉H₁₄NO₃

Chinese Name

2,2,5,5-四甲基-3-吡咯啉-1-氧基-3-羧酸

Molecular Weight

184.21200 g/mol

Category

Organic Acids

Last updated

8/21/2026