SMILES: CC(C)(C(=O)O)N
Description: The molecule is a rare, non-protein amino acid and end-product of pyrimidine metabolism, excreted in urine and found in some antibiotics of fungal origin. With the exception of a few bacteria, it is non-metabolisable, and therefore used in bioassays. It derives from a propionic acid and an isobutyric acid.