(S)-2-Hydroxy-4-(methylthio)butyric acid, L-2-Hydroxy-4-methylmercapto-buttersaeure, (S)-2-hydroxy-4-methylsulfanyl-butyric acid, 2(S)-hydroxy-4-(methylthio)butanoic acid, (S)-2-hydroxy-4-(methylthio)butanoic acid, (S)-2-Hydroxy-4-methylmercapto-buttersaeure