谷胱甘肽欧洲药典51标准
5页1、GLUTATHIONEGlutathionumC10H17N3O6S Mr 307.3DEFINITIONL-?-Glutamyl-L-cysteinylglycine.Content : 98.0 per cent to 101.0 per cent (dried substance).谷胱甘肽C10H17N3O6S Mr 307.3定义描述Lr谷氨酰基L半胱氨酰基甘氨酸含量:按干燥品计算,98.0%-101.0%CHARACTERSAppearance: white or almost white, crystalline powder orcolourless crystals.Solubility : freely soluble in water, very slightly soluble inethanol (96 per cent) and in methylene chloride.性状外观性状:白色或几乎白色结晶性粉末或无色的结晶。溶解度:易溶于水,微溶于96%乙醇及二氯甲烷。IDENTIFICATIONA. It complies with the test fo
2、r specific optical rotation (seeTests).B. Infrared absorption spectrophotometry (2.2.24).Comparison : glutathione CRS.鉴别A 比旋度符合特定的光学旋转测定(见测定项)。B 红外吸收光谱检测(2.2.24)对比:谷胱甘肽CRS.TESTSSolution S. Dissolve 5.0 g in distilled water R and dilute to 50 ml with the same solvent.Appearance of solution. Solution S is clear (2.2.1) and colourless (2.2.2, Method II).Specific optical rotation (2.2.7) : ?15.5 to ?17.5 (dried substance).Dissolve 1.0 g in water R and dilute to 25.0 ml with the same solvent.测定溶液S:取本
3、品5.0g,蒸馏水R溶解并稀释至50ml。溶液澄清度 溶液S澄清(2.2.1),无色(2.2.2, Method II)比旋度(2.2.7) 15.5。17.5(干品物质)取本品1.0g,蒸馏水R溶解并稀释至25.0ml。Related substances. Capillary electrophoresis (2.2.47).Prepare the solutions immediately before use.Internal standard solution (a). Dissolve 0.100 g of phenylalanine R in the electrolyte solution and dilute to 50.0 ml with the same solution.Internal standard solution (b). Dilute 10.0 ml of internal standard solution (a) to 100.0 ml with the electrolyte solution.Test solution (a). Dissol
4、ve 0.200 g of the substance to be examined in the electrolyte solution and dilute to 10.0 ml with the same solution.Test solution (b). Dissolve 0.200 g of the substance to be examined in internal standard solution (b) and dilute to 10.0 ml with the same solution.Reference solution (a). Dissolve 20 mg of the substance to be examined in internal standard solution (a) and dilute to 10.0 ml with the same solution.Reference solution (b). Dilute 5.0 ml of reference solution (a) to 50.0 ml with the ele
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