Synonyms: Butanoicacid, 2-amino-4-[(aminoiminomethyl)amino]-, monohydrochloride, (2S)- (9CI);Butanoic acid, 2-amino-4-[(aminoiminomethyl)amino]-, monohydrochloride, (S)-;Butyric acid, 2-amino-4-guanidino-, monohydrochloride, L- (8CI);L-2-Amino-4-guanidinobutyric acid hydrochloride; NSC 374666