Azetidine-2-carboxylic acid 是脯氨酸的非蛋白原氨基酸同系物，可以在常见的甜菜中获得。 在许多物种中，它能够错误地掺入蛋白质中代替脯氨酸，是一种致毒和致畸剂。

Azetidine-2-carboxylic acid is a non proteinogenic amino acid homologue of proline found in common beets. Azetidine-2-carboxylic acid can be misincorporated into proteins in place of proline in many species, including humans. It is a toxic and teratogenic agent[1][2].

2517-04-6

C4H7NO2

101.1

Azetidine-2-carboxylic acid

H2O:50 mg/mL (494.56 mM),Need ultrasonic
Powder: -20°C for 3 years
In solvent: -80°C for 2 years