The molecule is the 1-pyrrolinecarboxylate formed by deprotonation of the carboxy group of (3R,5S)-1-pyrroline-3-hydroxy-5-carboxylic acid; principal microspecies at pH 7.3. It is a conjugate base of a (3R,5S)-1-pyrroline-3-hydroxy-5-carboxylic acid.
(2S,4R)-4-hydroxy-3,4-dihydro-2H-pyrrole-2-carboxylate