Methionin (-DL)-sualan1 -...

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Unformatted text preview: DL-METHIONINDL-MethioninumC5H11NO2SP.t.l: 149,2DL-Methionin l acid (2RS)-2-amino-4-(methylsulphanyl) butanoic, ph i ch a t 99,0 n 101,0%C5H11NO2S, tnh theo ch ph m lm kh.Tnh ch tB t k t tinh tr ng hay v y tr ng. H i tan trong nc, r t kh tan trong ethanol 96%. Tan trong cc dung d ch acid v hydroxyd ki mlong.Ch y kho ng 270 oC (Ph l c 6.7, phng php 3). nh tnhC th ch n m t trong hai nhm nh tnh sau:Nhm I: A, C.Nhm II: B, C, D.A. Ph h ng ngo i (Ph l c 4.2) c a ch ph m ph i ph h p v i ph h ng ngo i c a DL-Methionin chu n (C),s y 105 oC trc khi th .B. Quan st s c k m c php th "T p ch t lin quan": V t chnh trn s c k c a dung d ch th (2) ph i c v tr, mu s c v kch thc tng ng v i v t chnh trn s c k thu c t dung d ch i chi u (1).C. Ha tan 2,50 g ch ph m trong dung d ch acid hydrocloric 1 N (TT)v pha long thnh 50,0 ml b ngcng dung mi. Dung d ch thu c ph i c gc quay c c t -0,05 n +0,05 o(Ph l c 6.4).(Ph l c 6....
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Methionin (-DL)-sualan1 -...

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