MK-2894_1006036-87-8_DataSheet_MedChemExpress
艾美捷OLFM4酶联免疫吸附试剂盒使用说明书

(本试剂盒仅供体外研究使用,不用于临床诊断!)产品货号:E-EL-H6102产品规格:96T/48T/24T人嗅素4(OLFM4)酶联免疫吸附测定试剂盒使用说明书Human OLFM4(Olfactomedin 4) ELISA Kit使用前请仔细阅读说明书。
如果有任何问题,请通过以下方式联系我们:销售部电话************,************技术部电话************QQ客服800110755具体保质期请见试剂盒外包装标签。
请在保质期内使用试剂盒。
联系时请提供产品批号(见试剂盒标签),以便我们更高效地为您服务。
用途该试剂盒用于体外定量检测人血清、血浆或其它相关生物液体中OLFM4浓度。
灵敏度、检测范围、特异性和重复性●灵敏度:1.88ng/mL。
●检测范围:3.13-200ng/mL。
●特异性:可检测样本中的人OLFM4,且与其它类似物无明显交叉反应。
●重复性:板内,板间变异系数均<10%。
检测原理本试剂盒采用双抗体夹心ELISA法。
用抗人OLFM4抗体包被于酶标板上,实验时样品(或标准品)中的人OLFM4会与包被抗体结合,游离的成分被洗去。
后依次加入生物素化的抗人OLFM4抗体和辣根过氧化物酶标记的亲和素,抗人OLFM4抗体与结合在包被抗体上的人OLFM4结合,生物素与亲和素特异性结合而形成免疫复合物,游离的成分被洗去。
加入显色底物(TMB),TMB在辣根过氧化物酶的催化下呈现蓝色,加终止液后变成黄色。
用酶标仪在450nm波长处测OD值,OLFM4浓度与OD450值之间呈正比,通过绘制标准曲线计算出样品中OLFM4的浓度。
试剂盒组成及保存未拆封的试剂盒可在2-8℃保存一周;如果一周以后才使用试剂盒,请拆开试剂盒并按照下表中的条件分别保存各组分。
试剂体积以实际发货版说明书为准。
相关试剂在分装时会比标签上标明的体积稍多一些,请在使用时量取而非直接倒出。
试验所需自备物品1.酶标仪(450nm波长滤光片)2.高精度移液器,EP管及一次性吸头:0.5-10μL, 2-20μL, 20-200μL, 200-1000μL3.37℃恒温箱,双蒸水或去离子水4.吸水纸5.加样槽注意事项1.试验中请穿着实验服并戴乳胶手套做好防护工作。
XMD8-87_DataSheet_MedChemExpress

Inhibitors, Agonists, Screening Libraries Data SheetBIOLOGICAL ACTIVITY:XMD8–87 is a potent TNK2 inhibitor with IC 50 values of 38 and 113 nM for the D163E and R806Q mutations, respectively.IC50 & Target: IC50: 38 nM (TNK2, D163E mutation), 113 nM (TNK2, R806Q mutation)[1]In Vitro: XMD8–87 potently inhibits the growth of the TNK2 mutant expressing cell lines while having little or no effect on the control cells out to the highest tested concentrations (1,000 nM). XMD8–87 has IC 50s of 38 nM and 113 nM for the D163E and R806Q mutations. The effects of XMD8–87 on TNK2 cell lines are largely due to on–target effects on TNK2. Auto–phosphorylation of overexpressed TNK2 mutants could be blocked with TNK2 inhibitor XMD8–87[1].PROTOCOL (Extracted from published papers and Only for reference)Kinase Assay:[1]Kinase targets are tested with biochemical enzymatic kinase assays using the SelectScreen Kinase Profiling Service to determine IC 50 values. The compounds (XMD8–87) are assayed at 10 concentrations (3–fold serial dilutions starting from 1 μM) at an ATP concentration equal to the ATP Km [1].Cell Assay:[1]Cells are treated with the following inhibitors for 72 hours: dasatinib, AIM–100, XMD8–87 and XMD16–5. Cell viability is measured using a methanethiosulfonate (MTS)–based assay and absorbance (490 nm) is read at 1 and 3 hours after adding reagent [1].References:[1]. Maxson JE, et al. Identification and Characterization of Tyrosine Kinase Nonreceptor 2 Mutations in Leukemia through Integration of Kinase Inhibitor Screening and Genomic Analysis.Product Name:XMD8–87Cat. No.:HY-15811CAS No.:1234480-46-6Molecular Formula:C 24H 27N 7O 2Molecular Weight:445.52Target:Tyrosinase Pathway:Metabolic Enzyme/Protease Solubility:DMSO: ≥ 26 mg/mLCaution: Product has not been fully validated for medical applications. For research use only.Tel: 609-228-6898 Fax: 609-228-5909 E-mail: tech@ Address: 1 Deer Park Dr, Suite Q, Monmouth Junction, NJ 08852, USA。
n-羟乙基-2-咪唑烷酮质量标准_概述说明

n-羟乙基-2-咪唑烷酮质量标准概述说明1. 引言1.1 概述n-羟乙基-2-咪唑烷酮(简称HEMK)是一种重要的有机化合物,其分子式为C6H11NO2,具有较好的溶解性和稳定性。
作为一种重要的中间体,在许多领域中都有广泛的应用。
本文将对HEMK的质量标准进行概述和说明。
1.2 文章结构本文分为五个主要部分来探讨HEMK的质量标准。
引言部分介绍了文章的概述、目的和结构;正文部分会详细介绍HEMK的性质、用途以及质量标准制定的重要性;第三章节标题会提供进一步探讨HEMK质量标准相关内容;第四章节标题则将深入探讨更多与HEMK质量标准相关内容;最后在结论部分总结主要内容、发现结果,并对HEMK质量标准的重要性进行评价和展望未来研究方向。
1.3 目的本文旨在全面了解n-羟乙基-2-咪唑烷酮(HEMK)这种有机化合物,并对其质量标准制定进行说明。
通过本文,读者将对HEMK的性质、用途以及质量标准制定的重要性有一个整体的了解,并为未来的相关研究提供参考。
本文的目标是传达HEMK质量标准方面的核心概念和重要观点,使读者能够更好地理解和应用HEMK这一化合物。
2. 正文:2.1 n-羟乙基-2-咪唑烷酮的性质n-羟乙基-2-咪唑烷酮是一种有机化合物,其分子式为C5H9N3O2。
它是白色结晶固体,在常温下为固态形式。
该化合物的分子量为131.14 g/mol。
它在水中有良好的溶解度,并且可溶于许多有机溶剂如甲醇、乙醇和二氯甲烷等。
此外,n-羟乙基-2-咪唑烷酮具有较高的稳定性和低毒性。
2.2 n-羟乙基-2-咪唑烷酮的用途由于其特殊的化学性质和生物活性,n-羟乙基-2-咪唑烷酮在医药领域具有广泛应用。
首先,它被广泛用作药物包装材料和缓释剂。
将药物封装到n-羟乙基-2-咪唑烷酮颗粒中可以提高药物的稳定性和控制释放速率,从而增强药物治疗效果。
其次,n-羟乙基-2-咪唑烷酮还可用作药物载体和辅助溶剂,在药物传递和输送系统中发挥重要作用。
苏州科铭试剂盒总清单-5.3

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L-半乳糖苷-1,4-内酯脱氢酶(Gal LDH)测试盒
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MK-2894-SDS-MedChemExpress

Inhibitors, Agonists, Screening LibrariesSafety Data Sheet Revision Date:Oct.-12-2018Print Date:Oct.-12-20181. PRODUCT AND COMPANY IDENTIFICATION1.1 Product identifierProduct name :MK-2894Catalog No. :HY-10413CAS No. :1006036-87-81.2 Relevant identified uses of the substance or mixture and uses advised againstIdentified uses :Laboratory chemicals, manufacture of substances.1.3 Details of the supplier of the safety data sheetCompany:MedChemExpress USATel:609-228-6898Fax:609-228-5909E-mail:sales@1.4 Emergency telephone numberEmergency Phone #:609-228-68982. HAZARDS IDENTIFICATION2.1 Classification of the substance or mixtureNot a hazardous substance or mixture.2.2 GHS Label elements, including precautionary statementsNot a hazardous substance or mixture.2.3 Other hazardsNone.3. COMPOSITION/INFORMATION ON INGREDIENTS3.1 SubstancesSynonyms:NoneFormula:C25H22F3NO3SMolecular Weight:473.51CAS No. :1006036-87-84. FIRST AID MEASURES4.1 Description of first aid measuresEye contactRemove any contact lenses, locate eye-wash station, and flush eyes immediately with large amounts of water. Separate eyelids with fingers to ensure adequate flushing. Promptly call a physician.Skin contactRinse skin thoroughly with large amounts of water. Remove contaminated clothing and shoes and call a physician.InhalationImmediately relocate self or casualty to fresh air. If breathing is difficult, give cardiopulmonary resuscitation (CPR). Avoid mouth-to-mouth resuscitation.IngestionWash out mouth with water; Do NOT induce vomiting; call a physician.4.2 Most important symptoms and effects, both acute and delayedThe most important known symptoms and effects are described in the labelling (see section 2.2).4.3 Indication of any immediate medical attention and special treatment neededTreat symptomatically.5. FIRE FIGHTING MEASURES5.1 Extinguishing mediaSuitable extinguishing mediaUse water spray, dry chemical, foam, and carbon dioxide fire extinguisher.5.2 Special hazards arising from the substance or mixtureDuring combustion, may emit irritant fumes.5.3 Advice for firefightersWear self-contained breathing apparatus and protective clothing.6. ACCIDENTAL RELEASE MEASURES6.1 Personal precautions, protective equipment and emergency proceduresUse full personal protective equipment. Avoid breathing vapors, mist, dust or gas. Ensure adequate ventilation. Evacuate personnel to safe areas.Refer to protective measures listed in sections 8.6.2 Environmental precautionsTry to prevent further leakage or spillage. Keep the product away from drains or water courses.6.3 Methods and materials for containment and cleaning upAbsorb solutions with finely-powdered liquid-binding material (diatomite, universal binders); Decontaminate surfaces and equipment by scrubbing with alcohol; Dispose of contaminated material according to Section 13.7. HANDLING AND STORAGE7.1 Precautions for safe handlingAvoid inhalation, contact with eyes and skin. Avoid dust and aerosol formation. Use only in areas with appropriate exhaust ventilation.7.2 Conditions for safe storage, including any incompatibilitiesKeep container tightly sealed in cool, well-ventilated area. Keep away from direct sunlight and sources of ignition.Recommended storage temperature:Powder-20°C 3 years4°C 2 yearsIn solvent-80°C 6 months-20°C 1 monthShipping at room temperature if less than 2 weeks.7.3 Specific end use(s)No data available.8. EXPOSURE CONTROLS/PERSONAL PROTECTION8.1 Control parametersComponents with workplace control parametersThis product contains no substances with occupational exposure limit values.8.2 Exposure controlsEngineering controlsEnsure adequate ventilation. Provide accessible safety shower and eye wash station.Personal protective equipmentEye protection Safety goggles with side-shields.Hand protection Protective gloves.Skin and body protection Impervious clothing.Respiratory protection Suitable respirator.Environmental exposure controls Keep the product away from drains, water courses or the soil. Cleanspillages in a safe way as soon as possible.9. PHYSICAL AND CHEMICAL PROPERTIES9.1 Information on basic physical and chemical propertiesAppearance White to off-white (Solid)Odor No data availableOdor threshold No data availablepH No data availableMelting/freezing point No data availableBoiling point/range No data availableFlash point No data availableEvaporation rate No data availableFlammability (solid, gas)No data availableUpper/lower flammability or explosive limits No data availableVapor pressure No data availableVapor density No data availableRelative density No data availableWater Solubility No data availablePartition coefficient No data availableAuto-ignition temperature No data availableDecomposition temperature No data availableViscosity No data availableExplosive properties No data availableOxidizing properties No data available9.2 Other safety informationNo data available.10. STABILITY AND REACTIVITY10.1 ReactivityNo data available.10.2 Chemical stabilityStable under recommended storage conditions.10.3 Possibility of hazardous reactionsNo data available.10.4 Conditions to avoidNo data available.10.5 Incompatible materialsStrong acids/alkalis, strong oxidising/reducing agents.10.6 Hazardous decomposition productsUnder fire conditions, may decompose and emit toxic fumes.Other decomposition products - no data available.11.TOXICOLOGICAL INFORMATION11.1 Information on toxicological effectsAcute toxicityClassified based on available data. For more details, see section 2Skin corrosion/irritationClassified based on available data. For more details, see section 2Serious eye damage/irritationClassified based on available data. For more details, see section 2Respiratory or skin sensitizationClassified based on available data. For more details, see section 2Germ cell mutagenicityClassified based on available data. For more details, see section 2CarcinogenicityIARC: No component of this product present at a level equal to or greater than 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.ACGIH: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by ACGIH.NTP: No component of this product present at a level equal to or greater than 0.1% is identified as a anticipated or confirmed carcinogen by NTP.OSHA: No component of this product present at a level equal to or greater than 0.1% is identified as a potential or confirmed carcinogen by OSHA.Reproductive toxicityClassified based on available data. For more details, see section 2Specific target organ toxicity - single exposureClassified based on available data. For more details, see section 2Specific target organ toxicity - repeated exposureClassified based on available data. For more details, see section 2Aspiration hazardClassified based on available data. For more details, see section 212. ECOLOGICAL INFORMATION12.1 ToxicityNo data available.12.2 Persistence and degradabilityNo data available.12.3 Bioaccumlative potentialNo data available.12.4 Mobility in soilNo data available.12.5 Results of PBT and vPvB assessmentPBT/vPvB assessment unavailable as chemical safety assessment not required or not conducted.12.6 Other adverse effectsNo data available.13. DISPOSAL CONSIDERATIONS13.1 Waste treatment methodsProductDispose substance in accordance with prevailing country, federal, state and local regulations.Contaminated packagingConduct recycling or disposal in accordance with prevailing country, federal, state and local regulations.14. TRANSPORT INFORMATIONDOT (US)This substance is considered to be non-hazardous for transport.IMDGThis substance is considered to be non-hazardous for transport.IATAThis substance is considered to be non-hazardous for transport.15. REGULATORY INFORMATIONSARA 302 Components:No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.SARA 313 Components:This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.SARA 311/312 Hazards:No SARA Hazards.Massachusetts Right To Know Components:No components are subject to the Massachusetts Right to Know Act.Pennsylvania Right To Know Components:No components are subject to the Pennsylvania Right to Know Act.New Jersey Right To Know Components:No components are subject to the New Jersey Right to Know Act.California Prop. 65 Components:This product does not contain any chemicals known to State of California to cause cancer, birth defects, or anyother reproductive harm.16. OTHER INFORMATIONCopyright 2018 MedChemExpress. The above information is correct to the best of our present knowledge but does not purport to be all inclusive and should be used only as a guide. The product is for research use only and for experienced personnel. It must only be handled by suitably qualified experienced scientists in appropriately equipped and authorized facilities. The burden of safe use of this material rests entirely with the user. MedChemExpress disclaims all liability for any damage resulting from handling or from contact with this product.Caution: Product has not been fully validated for medical applications. For research use only.Tel: 609-228-6898 Fax: 609-228-5909 E-mail: tech@Address: 1 Deer Park Dr, Suite Q, Monmouth Junction, NJ 08852, USA。
UHPLC-MS

UHPLC-MS/MS法测定瑞戈非尼中两种痕量基因毒性杂质陈爽ꎬ刘柱ꎬ石云峰ꎬ朱价ꎬ罗英(浙江省食品药品检验研究院ꎬ浙江杭州310058)摘要:目的㊀建立超高效液相色谱-串联质谱(UHPLC-MS/MS)方法测定瑞戈非尼中两类基因毒性杂质[3-氟-4-氨基苯酚(SM2)㊁3-三氟甲基-4-氯异氰酸苯酯(SM3)]的含量ꎮ方法㊀采用色谱柱AgilentRRHDC18(2.1mmˑ100mmꎬ1.8μm)ꎬ流动相为0.05%甲酸水-甲醇ꎬ梯度洗脱ꎬ流速为0.3mL min-1ꎬ柱温为35ħꎻ采用Agilent1290-6470A液质联用仪和电喷雾离子源(AJSESI)源检测ꎬ正负离子模式采集数据ꎮ结果㊀本方法的专属性㊁线性与范围㊁定量限与检测限㊁准确度㊁精密度及稳定性均符合«中国药典»的验证指标ꎮ结论㊀本方法操作简便ꎬ结果可靠ꎬ用于两批瑞戈非尼中潜在毒性杂质(3-氟-4-氨基苯酚㊁3-三氟甲基-4-氯异氰酸苯酯)的测定ꎮ两批样品中均未检测到SM2ꎬ而基因毒性杂质SM3的含量分别为13.6ˑ10-6和41.4ˑ10-6ꎮ关键词:瑞戈非尼ꎻ基因毒性杂质ꎻ超高效液相色谱-串联质谱中图分类号:R927.1㊀文献标志码:A㊀文章编号:2095-5375(2023)07-0485-005doi:10.13506/j.cnki.jpr.2023.07.010DeterminationoftwotracegenotoxicimpuritiesinRegorafenibbyUHPLC-MS/MSCHENShuangꎬLIUZhuꎬSHIYunfengꎬZHUJiaꎬLUOYing(ZhejiangInstituteforFoodandDrugControlꎬHangzhou310058ꎬChina)Abstract:Objective㊀ToestablishanUHPLC-MS/MSanalyticalmethodforthedeterminationofgenotoxicimpuritiesinRegorafenib.Methods㊀ThemethodwasachievedonaAgilentRRHDC18column(2.1mmˑ100mmꎬ1.8μm)utilizingamobilephaseof0.05%Formicacidwater(A)-Methanol(B)withgradientelutionattheflowrateof0.3mL min-1.Thetemperatureofcolumnwassetat35ħ.TheAgilent1290-6470ALC-MSwasusedtodetect(AJSESIsourceꎬinMultipleReactionMonitoringmode).Results㊀ThespecificityꎬlinearityandrangeꎬLOQandLODꎬaccuracyꎬprecisionandstabilityofthemethodwereallinaccordancewiththevalidationofChinesePharmacopoeia.Conclusion㊀Theproposedmethodwassuccessfullyappliedtodeterminethetrace-levelPGIsintwobatchesofregorafenib.ThecontentsofSM2werenotobservedinthetwobatchesofsamplesꎬwhereasthecontentsofSM3weredeterminedtobe13.6ˑ10-6and41.4ˑ10-6ꎬrespectively.Keywords:RegorafenibꎻGenotoxicimpurityꎻUHPLC-MS/MS㊀㊀基因毒性杂质(或遗传毒性杂质ꎬgenotoxicim ̄purityꎬGTI)是少量即能引起细胞DNA损伤ꎬ诱导基因突变ꎬ并具有致癌倾向的化合物[1]ꎮ欧洲药品管理局(EMEA)㊁美国食品药品管理局(FDA)及人用药品注册技术要求国际协调会(ICH)先后颁布了基因毒性杂质控制的指导文件[2-4]ꎬ推荐以毒理学关注阈值(TTCꎬ1.5μg d-1)来控制用药风险ꎬ并发布基因毒性警示结构基团ꎮ瑞戈非尼(Regorafenib)是拜耳药业研发并于2017年3月在国内上市的一种新型口服多靶点的磷酸激酶抑制剂ꎬ本品以促进肿瘤血管生成和细胞增殖的多种蛋白激酶为靶标ꎬ达到治疗晚期及转移性结肠癌㊁进展期肝细胞癌㊁胃肠道恶性间质肿瘤㊁儿童神经母细胞瘤和胶质母细胞瘤及一些转移性实体肿瘤的目的ꎮ瑞戈非尼的合成路线中起始物料SM2㊁SM3结构中均含有苯胺类基因毒性警示结构基团ꎬ具有潜在基因毒性ꎬ详见图1ꎮ瑞戈非尼已收载于«中国药典»和«欧洲药典»ꎬ已经报道了一种LC-MS/MS法定量同时测定肝细胞癌患者血浆中瑞戈非尼中及其两种活性代谢物的含量的方法[17]ꎬ但目前也未见相关文献报道本品中两种苯胺类基因毒性杂质SM2㊁SM3的测定方法ꎮ㊀作者简介:陈爽ꎬ女ꎬ硕士ꎬ副主任药师ꎬ研究方向:药物质量研究㊁标准提高研究ꎬE-mail:credear@126.comA.3-氟-4-氨基苯酚(SM2)ꎻB.3-三氟甲基-4-氯异氰酸苯酯(SM3)图1㊀瑞戈非尼中苯胺类基因毒性杂质结构因此建立超高效液相色谱-串联质谱(UHPLC-MS/MS)方法对瑞戈非尼中少量的苯胺类基因毒性杂质的含量进行控制ꎮ本研究依照ICH推荐的条件ꎬ建立了方法并从方法的专属性㊁溶液稳定性㊁线性与范围㊁定量限与检测限㊁准确度㊁精密度方面进行了方法学研究ꎬ本法灵敏㊁可靠㊁简便ꎬ为瑞戈非尼工艺过程控制和质量保障提供参考依据ꎮ1㊀仪器与试剂Agilent1290-6470ALC-MS联用系统(美国安捷伦)ꎬ配备电喷雾离子源(AJSESI)ꎬ质谱软件为AgilentMassHunter工作站ꎻXS205DU百万分之一电子天平(瑞士梅特勒托利多公司)ꎮAgilentRRHDC18(2.1mmˑ100mmꎬ1.8μmꎬ填料:十八烷基硅烷键合硅胶ꎻAgilent公司)ꎮ3-氟-4-氨基苯酚对照品(批号:P1156811ꎬ纯度:98%)ꎬ3-三氟甲基-4-氯异氰酸苯酯对照品(杭州华东医药集团新药研究院有限公司ꎬ批号:191201ꎬ纯度:99.76%)ꎻ瑞戈非尼(批号:RGFN-B-190901㊁Z193-A1911001ꎬ由A公司提供)ꎻ甲醇(默克试剂有限公司)㊁异丙醇㊁甲酸(阿拉丁有限公司)均为色谱级ꎮ2㊀方法与结果2.1㊀色谱条件㊀液相色谱柱:AgilentRRHDC18(2.1mmˑ100mmꎬ1.8μm)ꎻ流速0.3mL min-1ꎻ0.05%甲酸水为流动相Aꎬ甲醇为流动相Bꎬ梯度洗脱(0~1.2minꎬ10%Bꎻ1.2~4.0minꎬ10%Bң60%Bꎻ4.0~8.0minꎬ60%Bꎻ8.0~13.0minꎬ95%Bꎻ13.0~13.10minꎬ95%Bң10%Bꎻ13.10~15.0minꎬ10%B)ꎻ柱温35ħꎻ进样体积5μLꎮ取0.6ng mL-1混标对照品溶液ꎬ在MRM模式下进样分析ꎬ结果如图2所示ꎬ各杂质之间分离度良好ꎮ2.2㊀质谱条件㊀采用电喷雾离子源(AJSESI)ꎬ正负离子检测模式MRM采集(SM2正离子模式㊁SM3㊀SM2[3-氟-4-氨基苯酚(3-Fluoro-4-aminophenol)]ꎻSM3[3-三氟甲基-4-氯异氰酸苯酯(3-trifluoromethyl-4-phenyl ̄chloroisocyanate)]图2㊀混合对照品溶液总离子流图负离子模式)ꎬ参数见表1ꎮ喷雾电压为3.5kVꎬ鞘气为250ħꎬ鞘气流速为11L min-1ꎬ雾化气为45psiꎬ干燥气温度为300ħꎬ干燥气流速为5L min-1ꎮ母离子及子离子:取0.6μg mL-1混标对照品溶液ꎬ在Scan模式下进样ꎬ进行MS分析ꎬ两种基因毒性杂质的质谱图如图4所示ꎬ其中3-氟-4-氨基苯酚的母离子为m/z128.05ꎬ3-三氟甲基-4-氯异氰酸苯酯的母离子为m/z280.00ꎮ各基因毒性杂质的MRM参数见表1ꎬ定量离子及定性离子的选择见表1ꎮ表1㊀MRM采集参数设置化合物类型母离子(m/z)子离子(m/z)碰撞能量/eV碎裂电压/V扫描时间/msSM2(ESI+)SM3(ESI-)定量离子128.0510817定性离子128.0581.125定量离子280219.913定性离子280199.92585112100㊀SM2[3-氟-4-氨基苯酚(3-fluoro-4-aminophenol)]ꎻSM3[3-三氟甲基-4-氯异氰酸苯酯(3-trifluoromethyl-4-phenyl ̄chloroisocyanate)]图3㊀两种基因毒性杂质的质谱图2.3㊀混标对照品溶液㊀精密称取3-氟-4-氨基苯酚对照品㊁3-三氟甲基-4-氯异氰酸苯酯对照品各约6mgꎬ加稀释剂异丙醇溶解并稀释成6ng mL-1的混标对照品储备液ꎮ精密量取适量ꎬ稀释10倍ꎬ作为0.6ng mL-1混标对照品溶液ꎮ2.4㊀供试品溶液㊀取本品约20mgꎬ精密称定ꎬ置20mL容量瓶ꎬ用稀释剂溶解并稀释到刻度ꎬ摇匀ꎻ再精密量取0.1mLꎬ置10mL容量瓶ꎮ异丙醇稀释至刻度ꎬ摇匀ꎬ作为供试品溶液(10μg mL-1)ꎮ2.5㊀100%加标供试品溶液㊀取本品约20mgꎬ精密称定ꎬ置20mL量瓶中ꎬ用异丙醇溶解稀释至刻度ꎬ摇匀ꎻ再精密量取0.1mLꎬ置10mL容量瓶ꎬ加入1mL对照品储备液后ꎬ再用异丙醇稀释至刻度ꎬ摇匀ꎬ作为100%加标供试品溶液ꎮ2.6㊀方法学考察㊀2.6.1㊀专属性试验㊀取稀释剂照上述条件进行试验ꎬ记录色谱图ꎬ结果显示稀释剂不干扰测定ꎬ表明该方法专属性良好ꎮ2.6.2㊀线性关系㊁检测限和定量限㊀精密量取混标对照品储备液适量ꎬ加稀释剂稀释得到浓度分别为0.15㊁0.3㊁0.45㊁0.6㊁0.9㊁1.2ng mL-1的混标对照品溶液ꎬ进样分析ꎬ绘制标准曲线ꎬ得线性方程(见表2)ꎮ逐步稀释ꎬ考察定量限及检测限(见图4)ꎮ表2㊀瑞戈非尼中两种基因毒性杂质的线性范围㊁定量检测限及精密度参数SM2SM3线性方程Y=4799.5X+27.1Y=893.3X+27.1范围/ng mL-10.15~1.170.15~1.19r0.99990.9991检测限/ng mL-10.060.06定量限/ng mL-10.150.15精密度RSD(%)1.321.97中间精密度RSD(%)2.532.24图4㊀定量限和检测限MRM质谱图2.6.3㊀稳定性试验㊀取 2.3 项下0.6ng mL-1的混标对照品溶液ꎬ 2.5 项下10μg mL-1的100%加标供试品溶液ꎬ连续进样16h进行分析ꎬ各峰面积偏离度的绝对值在8h内均小于17.22%ꎬ表明对照品溶液和100%加标供试品溶液在8h内稳定性良好ꎮ2.6.4㊀准确度和精密度试验㊀精密称取瑞戈非尼(批号:RGFN-B-190901㊁Z193-A1911001)约20mgꎬ一式12份ꎬ分别置20mL量瓶中ꎬ用异丙醇溶解稀释至刻度ꎬ摇匀ꎻ再精密量取0.1mLꎬ置10mL容量瓶ꎬ精密加入 2.3 项下浓度为6ng mL-1的混标对照品储备液溶液0.25㊁0.5㊁1.0㊁1.5mLꎬ分别溶解并稀释至刻度ꎬ摇匀ꎬ即得低(0.15ng mL-1ꎬ3份)㊁中(0.30ng mL-1ꎬ3份)㊁高(0.60ng mL-1ꎬ3份)㊁极高(0.90ng mL-1ꎬ3份)4个浓度的供试品加标溶液ꎬ取混标对照品溶液和各加标供试品溶液分别进样分析ꎬ外标法计算回收率结果见表3ꎬ各基因毒性杂质回收率均在90.64%~105.44%之间ꎬRSD均小于3.50%ꎬ表明各基因毒性杂质回收率和精密度良好ꎮ2.7㊀样品测定㊀取瑞戈非尼供试品2批(批号:RGFN-B-190901㊁Z193-A1911001)ꎬ每批精密称取2份约20mgꎬ置20mL量瓶中ꎬ加稀释剂溶解并稀释至刻度ꎬ摇匀ꎻ再精密量取0.1mLꎬ置10mL容量瓶ꎬ异丙醇稀释至刻度ꎬ摇匀ꎬ作为供试品溶液(10μg mL-1)ꎬ进样分析ꎬ结果2批次瑞戈非尼中SM2均未检出ꎬSM3均有检出(见表4)ꎮ表3㊀瑞戈非尼中各基因毒性杂质的回收率化合物加入量测得量回收率平均回收RSD(%)SM31.502.995.988.982.77101.332.78100.673.9790.644.1395.994.32102.347.0596.827.2299.677.42102.8410.25100.0010.0998.3310.2399.8999.153.41表4㊀瑞戈非尼中基因毒性杂质检测结果批号SM2含量(%)SM3含量(%)Z193-A19110010.00000.00136RGFN-B-1909010.00000.004143㊀讨论3.1㊀瑞戈非尼的合成工艺㊀如图1所示ꎬ以3-氟-4-氨基苯酚和N-甲基-4-氯-2-吡啶甲酰胺为原料㊁氢氧化钠为碱ꎬTHF为溶剂ꎬ回流反应得到中间体4-(4-氨基-3-氟苯氧基)-N-甲基吡啶-2-甲酰胺ꎬ该中间体再与4-氯-3-三氟甲基苯胺以羰基连接得到瑞戈非尼无水物(4-[4-[[[4-氯-3-(三氟甲基)苯基]氨基甲酰]氨基]-3-氟苯氧基]-N-甲基吡啶-2-甲酰胺)ꎬ加水而成ꎮ合成路线中涉及多个起始物料及中间体带有基因警示结构ꎬ因此ꎬ必须对瑞戈非尼合成路线中引入的带有基因警示结构的潜在基因毒性杂质进行控制ꎮ3.2㊀控制限度㊀参照瑞戈非尼片药品使用说明书ꎬ建议每日最低剂量为80mgꎬ每日最高剂量为160mgꎮ因为瑞戈非尼为抗肿瘤用药ꎬ可以不以ICHM7推荐的最严格的毒理学关注阈值(TTCꎬ1.5μg d-1)为控制限制ꎮ本研究基于治疗期ꎬ以相对严格的1~10年治疗期的TTC(10μg d-1)为控制限制计算ꎬ瑞戈非尼中基因毒性杂质限度应为62.5ˑ10-6ꎬ本研究以60ˑ10-6作为瑞戈非尼中基因毒性杂质的控制限度ꎮ本次研究用样品中未检出SM2ꎬ检出的SM3分别为13.6ˑ10-6㊁41.4ˑ10-6ꎬ均符合限度要求ꎬ但SM3检出量已超30%限度ꎬ值得关切ꎮ3.3㊀色谱条件的优化㊀色谱条件优化试验中ꎬ探索了甲醇㊁异丙醇和乙腈3种有机相(B相)ꎬ水相(A相)中添加不同比率的酸(0.1%甲酸水ꎬ0.05%甲酸水和0.1%乙酸水)对分离度和灵敏度的影响ꎮ结果显示ꎬ采用AgilentRRHDC18色谱柱ꎬ当流动相0.05%甲酸水溶液-甲醇梯度洗脱时ꎬ3-氟-4-氨基苯酚(SM2)㊁3-三氟甲基-4-氯异氰酸苯酯(SM3)响应较好ꎬ且两个化合物分离度良好ꎬ故流动相中选择0.05%甲酸水ꎮ本试验考察了流速0.2~0.4mL min-1范围内对苯胺类物质响应和峰形的影响ꎬ发现流速0.3mL min-1时ꎬSM2ꎬSM3离子化效率最高ꎬ出峰时间合适ꎬ且峰形较好ꎮ3.4㊀质谱解析㊀3-氟-4-氨基苯酚的质谱图中m/z128.05为[M+H]+离子ꎬ主要的碎片离子有m/z108和m/z81.1ꎬ其中m/z108为去氟基产物ꎬ反映了3-氟-4-氨基苯酚的结构特征ꎮ试验对3-氟-4-氨基苯酚2个离子对m/z128.05ң108和m/z128.05ң81.1的MRM参数见表1ꎬ其中ꎬ离子对m/z128.05ң108的信噪比较离子对m/z128.05ң81.1更高ꎬ因此选择m/z128.05ң108作为定量离子对ꎬm/z128.05ң81.1作为定性离子对ꎮ本法中SM3检测采用异丙醇衍生化ꎬ分析对象为SM3与异丙醇衍生后的产物ꎮ衍生产物精确分子量为281.04ꎬ其[M-H]-为280ꎬ反应过程见图5ꎮ图5㊀SM3衍生化反应(下转第525页)fattyacidbiogenesis:anewfamilyofanti-canceragents?[J].CurrPharmBiotechnolꎬ2006ꎬ7(6):483-493.[87]CHENXꎬHUANGKꎬHUSꎬetal.FASN-MediatedLipidMetabolismRegulatesGooseGranulosaCellsApoptosisandSteroidogenesis[J].FrontinPhysiolꎬ2020(11):600.[88]CHOYKꎬSONYꎬKIMSNꎬetal.MicroRNA-10a-5pregulatesmacrophagepolarizationandpromotestherapeuticadiposetissueremodeling[J].MolMetabꎬ2019(29):86-98.[89]XUEMꎬYANGMxingꎬZHANGWꎬetal.Characterizationꎬpharmacokineticsꎬandhypoglycemiceffectofberberineloadedsolidlipidnanoparticles[J].IntJNanomedicineꎬ2013(8):4677-4687.[90]XUEMꎬZHANGLꎬYANGMXꎬetal.Berberine-loadedsolidlipidnanoparticlesareconcentratedintheliverandamelioratehepatosteatosisindb/dbmice[J].IntJNano 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CFSE

货号:C375 CAS NO:150347-59-4活细胞染色-Cellstain- CFSE化学名:5- or 6-(N-Succinimidyloxycarbonyl)-3',6'-O,O'-diacetylfluorescein 别名:CFSE结构式:分子式:C29H19NO11分子量:557.46价格:性质:外观:白色或浅黄色粉末纯度:>95.0% (HPLC)产品描述CFSE能够轻易穿透细胞膜,在活细胞内聚积并与胞内蛋白共价结合,水解后的CFSE释放出荧光物质,这些共价结合的荧光物分子很少从细胞内脱落。
CFSE标记后的细胞用于体内观察可以长达数周。
因此,CFSE 常被用来做活细胞检测试验和用荧光电镜观察细胞长期活动的试验。
CFSE标记的细胞的激发和发射波长分别为500 nm和520 nm。
染色过程:1. 用DMSO制备1mM 的CFSE溶液。
用PBS或适当的缓冲液将其稀释成10-50 μM的CFSE溶液。
2. 将1/10细胞培养基体积的CFSE溶液加入到细胞培养基中。
3. 在37℃培养细胞15-30分钟。
4. 用PBS或适当的缓冲液洗涤细胞两次。
5. 用490 nm激发波长,530 nm发射波长的滤光片的荧光显微镜观察细胞。
常见问题:储存条件:-20℃参考文献:细胞增殖检测:CFSE点击次数:1195 作者:佚名发表于:2008-07-28 12:43转载请注明来自丁香园来源:丁香园一、原理荧光染料CFSE,也可称为CFDA SE(5,6- carboxyfluorescein diacet ate,succinimidyl ester)即羟基荧光素二醋酸盐琥珀酰亚胺脂,是一种可穿透细胞膜的荧光染料,具有与细胞特异性结合的琥珀酰亚胺脂基团和具有非酶促水解作用的羟基荧光素二醋酸盐基团,这使得CFSE成为一种良好的细胞标记物。
当CFSE以含有两个乙酸基团和一个succinimidyl ester功能基团的形式存在时,不具有荧光性质,而具有细胞膜通透性,能够自由进入细胞;而当其扩散进入细胞内环境,内源的酯酶可将其乙酸基团水解,此种形式的CFSE分子具有很高的荧光活性,被激发能够产生绿色荧光,却不再具有膜通透性;同时,其含有的succinimidyl ester基团能与胞内的细胞骨架蛋白中的游离胺基反应,最终形成具有荧光的蛋白加合物。
GC测定盐酸普拉克索中三乙胺残留量
