2-Hydroxy-4-(methylthio)butanoic acid calcium salt 4857-44-7 583-91-5 Butanoic acid, 2-hydroxy-4-(methylthio)-, calcium salt (2:1) (9CI) Butyric acid, 2-hydroxy-4-(methylthio)-, calcium salt (2:1) Calcium alpha-hydroxy-gamma-methylmercaptobutyrate (VAN) Calcium bis(2-hydroxy-4-(methylthio)butyrate) DL-Methioninehydroxyanalog calcium EINECS 225-455-4 MHA Methionine hydroxy analogue calcium salt NSC 1230 OH-M