The molecule is a 1-pyrroline-5-carboxylic acid in which the chiral centre has S configuration. It is a conjugate acid of a (S)-1-pyrroline-5-carboxylate. It is an enantiomer of a (R)-1-pyrroline-5-carboxylic acid.
(2S)-3,4-dihydro-2H-pyrrole-2-carboxylic acid