谷胱甘肽欧洲药典5.1标准.docx

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谷胱甘肽欧洲药典5.1标准.docx

GLUTATHIONE

Glutathionum

C10H17N3O6SMr307.3

DEFINITION

L-?

-Glutamyl-L-cysteinylglycine.

Content:

98.0percentto101.0percent(driedsubstance).

谷胱甘肽

C10H17N3O6SMr307.3

定义描述

L-r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%

CHARACTERS

Appearance:

whiteoralmostwhite,crystallinepowderor

colourlesscrystals.

Solubility:

freelysolubleinwater,veryslightlysolublein

ethanol(96percent)andinmethylenechloride.

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。

IDENTIFICATION

A.Itcomplieswiththetestforspecificopticalrotation(see

Tests).

B.Infraredabsorptionspectrophotometry(2.2.24).

Comparison:

glutathioneCRS.

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.

TESTS

SolutionS.Dissolve5.0gindistilledwaterRanddiluteto50mlwiththesamesolvent.

Appearanceofsolution.SolutionSisclear(2.2.1)andcolourless(2.2.2,MethodII).

Specificopticalrotation(2.2.7):

?

15.5to?

17.5(driedsubstance).

Dissolve1.0ginwaterRanddiluteto25.0mlwiththesamesolvent.

测定

溶液S:

取本品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,MethodII)

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。

Relatedsubstances.Capillaryelectrophoresis(2.2.47).

Preparethesolutionsimmediatelybeforeuse.

Internalstandardsolution(a).Dissolve0.100gofphenylalanineRintheelectrolytesolutionanddiluteto50.0mlwiththesamesolution.

Internalstandardsolution(b).Dilute10.0mlofinternalstandardsolution(a)to100.0mlwiththeelectrolytesolution.

Testsolution(a).Dissolve0.200gofthesubstancetobeexaminedintheelectrolytesolutionanddiluteto10.0mlwiththesamesolution.

Testsolution(b).Dissolve0.200gofthesubstancetobeexaminedininternalstandardsolution(b)anddiluteto10.0mlwiththesamesolution.

Referencesolution(a).Dissolve20mgofthesubstancetobeexaminedininternalstandardsolution(a)anddiluteto10.0mlwiththesamesolution.

Referencesolution(b).Dilute5.0mlofreferencesolution(a)to50.0mlwiththeelectrolytesolution.

Referencesolution(c).Dissolve0.200gofthesubstancetobeexaminedin5mloftheelectrolytesolution.Add1.0mlofinternalstandardsolution(a),0.5mlofa2mg/mlsolutionofL-cysteineR(impurityB)intheelectrolytesolution,0.5mlofa2mg/mlsolutionofL-glutathione,oxidisedR(impurityC)intheelectrolytesolutionand0.5mlofa2mg/mlsolutionofL-?

-glutamyl-L-cysteineR(impurityD)intheelectrolytesolution.Diluteto10.0mlwiththeelectrolytesolution.

有关物质采用毛细管电泳法(2.2.47)

溶液应临用前新鲜配制

内标液(a)取苯丙氨酸0.100g,加电解质溶液溶解并稀释至50.0ml

内标溶液(b)量取内标溶液(a)10.0ml,用电解质溶液稀释至100.0ml

供试溶液(a)取待检物质0.200g,加电解质溶液溶解并稀释至10.0ml。

供试溶液(b)取待检物质0.200g,加溶液(b)溶解并稀释至10.0ml

对照溶液(a)取待检物质20g,加标准溶液(a)溶解并稀释至10.0ml

对照溶液(b)取对照溶液(a)5.0ml,加电解质溶液稀释至50.0ml

对照溶液(c)取待检物质0.200g,加电解质溶液5ml溶解,加入1.0ml对照溶液(a),0.5ml2mg/mlL-半胱氨酸R的电解质溶液(杂质B),0.5ml2mg/ml氧化型谷胱甘肽R电解质溶液(杂质C)及0.5ml2mg/mlL-r谷氨酰基-L-半胱氨酰基甘氨酸R的电解质溶液(杂质D),然后用电解质溶液稀释至10.0ml

Capillary:

-material:

uncoatedfusedsilica,

-size:

lengthtothedetectorcell=0.5m;total

length=0.6m;?

=75μm.

Temperature:

25°C.

Electrolytesolution.Dissolve1.50gofanhydroussodiumdihydrogenphosphateRin230.0mlofwaterRandadjusttopH1.80withphosphoricacidR.Diluteto250.0mlwithwaterR.CheckthepHand,ifnecessary,adjustwithphosphoricacidRordilutesodiumhydroxidesolutionR.

Detection:

spectrophotometerat200nm.

Preconditioningofanewcapillary:

rinsethenewcapillarybeforethefirstinjectionwith0.1Mhydrochloricacidfor20minat138kPaandwithwaterRat138kPafor10min;forcompleteequilibration,conditionthecapillarywiththeelectrolytesolutionfor40minat350kPa,andsubsequentlyfor60minatavoltageof20kV;

毛细管

-材料:

石英(未涂层)

-尺寸:

有效长度0.5m,总长:

0.6m,内径75μm

温度:

25℃

电解质溶液:

取无水磷酸二氢钠R1.50g,加水R230.0ml,用磷酸R调节PH值为1.80。

加水R稀释至150.0ml,检测PH值,如有必要,用磷酸R或氢氧化钠溶液R调节PH值。

检测:

采用分光光度计在200nm处检测

新毛细管的预处理:

在首次进样前在压力138Kpa下用0.1mol/L盐酸溶液前冲洗毛细管20min,138Kpa压力下用水R冲洗10分钟已达到全平衡状态,用电解质溶液在350kpa条件下冲洗40min,在电压20kv条件下保持60min。

Preconditioningofthecapillary:

rinsethecapillaryat138kPawiththeelectrolytesolutionfor40min;

Between-runrinsing:

rinsethecapillarywithwaterRat138kPafor1min,with0.1Msodiumhydroxidefor2min,withwaterRat138kPafor1min,with0.1Mhydrochloricacidfor3minandwiththeelectrolytesolutionat138kPafor10min.

Injection:

underpressure(3.45kPa)for5s;injecttheelectrolytesolution(blanksolution),referencesolutions(b)and(c)andtestsolutions(a)and(b).

Migration:

applyavoltageof20kV.

Runtime:

45min.

预处理的毛细管:

138kPa压力下,用电解质溶液冲洗毛细管40min;

批间冲洗:

138kPa压力下,依次用水R冲洗毛细管1min,0.1mol/L氢氧化钠溶液冲洗2min;水R冲洗1min,0.1mol/L盐酸溶液冲洗3min,最后用电解质溶液冲洗10min;

进样:

3.45kPa压力下维持5s;注入电解质溶液(空白溶液),对照溶液(b)、(c)和供试溶液a、b

迁移:

电压为20KV

运行时间:

45min

Relativemigra

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