160138-41-0 Butanoic acid, 3-((4-(4-(aminoiminomethyl)phenoxy)-1-oxobutyl)amino)-4-(((1S)-1-((1,1-dioxido-4-thiomorpholinyl)carbonyl)-2-methylpropyl)amino)-4-oxo-, (3S)- Butanoic acid, 3-((4-(4-(aminoiminomethyl)phenoxy)-1-oxobutyl)amino)-4-((2-methyl-1-(4-thiomorpholinylcarbonyl)propyl)amino)-4-oxo-, S,S-dioxide, (S-(R*,R*))- FR 158999