The molecule is an N-acyl-L-alpha-amino acid anion that is the anion formed by loss of a proton from the carboxy group of N-carbamoyl-L-cysteine; major species present at pH 7.3. It is a conjugate base of a N-carbamoyl-L-cysteine.
(2R)-2-(carbamoylamino)-3-sulfanylpropanoate