The molecule is an L-arginine derivative in which the guanidino NH2 group of L-arginine is replaced by a methylsufanyl group. It has a role as an EC 1.14.13.39 (nitric oxide synthase) inhibitor and a neuroprotective agent. It is a L-arginine derivative, a L-ornithine derivative, a non-proteinogenic L-alpha-amino acid and an imidothiocarbamic ester.
(2S)-2-amino-5-[[amino(methylsulfanyl)methylidene]amino]pentanoic acid