(2S)-4-oxoazetidine-2-carboxylic acid

(S)-(-)-4-氧代-2-吖丁啶羧酸

Also known as: (S)-(-)-4-oxo-2-azetidinecarboxylic acid, (S)-4-oxoazetidine-2-carboxylic acid, L-Pyroaspartic acid, (2S)-4-oxoazetidine-2-carboxylic acid, (S)-4-carboxy-2-azetidinone, 2-Azetidinecarboxylic acid, 4-oxo-, (2S)-

(2S)-4-oxoazetidine-2-carboxylic acid (CAS 16404-94-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5NO3 and a molecular weight of 115.087 g/mol. It is also known as (S)-(-)-4-oxo-2-azetidinecarboxylic acid, (S)-4-oxoazetidine-2-carboxylic acid and L-Pyroaspartic acid. Key properties include a melting point of 99-102ºC(lit.), a boiling point of 489.4±38.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 249.8±26.8 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

16404-94-7

Jingsj CID

J-25163-7

Molecular Formula

C₄H₅NO₃

Chinese Name

(S)-(-)-4-氧代-2-吖丁啶羧酸

Molecular Weight

115.087 g/mol

Category

Organic Acids

Last updated

8/21/2026