The molecule is a methionine sulfoximine in which the amino group has S-stereochemistry. It has a role as an EC 6.3.1.2 (glutamate--ammonia ligase) inhibitor. It is a methionine sulfoximine, a L-methionine derivative and a non-proteinogenic L-alpha-amino acid. It is a tautomer of a L-methionine sulfoximine zwitterion.
(2S)-2-amino-4-(methylsulfonimidoyl)butanoic acid