2734000538SEC在抗生素聚合物检测上的应用202training.ppt
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1、抗生素高分子聚合物检测专题(二)陈刚15800838759QQ:279038742,1.指药品中分子量大于药物本身的杂质总称,其分子量一般在10005000Da,个别可达10000Da左右。2.高分子聚合物不仅能引发IgE介导的过敏反应,而且青霉素类的抗生素还能经胃肠道吸收而引发过敏反应。,什么是抗生素中的高分子杂质?为什么要检查?,高分子聚合物的测定原理是什么?,Sephadex G-10的排阻分子量仅为700d,因此,除部分寡聚物外,内酰胺类抗生素中的高分子杂质在色谱过程中均不保留;即所有的高分子杂质表现为单一的色谱峰在特定条件下,内酰胺类抗生素由于分子间的氢键、静电相互作用、疏水相互作用
2、等次级相互作用,可以形成缔合物,导致其表观分子量增大;此时在Sephadex G-10凝胶色谱系统中和高分子杂质具有相似的色谱行为,流动相A为pH=7.0的磷酸盐缓冲液,流动相B为纯化水或0.1十二烷基硫酸钠;凝胶介质:Sephadex G-10;检测波长254nm;对照溶液采用自身对照品配制。,Sephadex G-10典型色谱条件,Sephadex G-10典型色谱图(头孢地尼),赛分科技抗生素高聚物检测进展举例专题(一)专题(二),Column:SRT SEC-150(5 m,150,7.8 x 300 mm)Mobile phase:150 mM Sodium phosphate bu
3、ffer(pH 7.0):ACN=95:5(v/v)Flow rate:1.0 mL/minDetector:UV 254 nmColumn temperature:Room temperature Injection volume:10 LSample:5mg/mL Amoxicillin in 150mM Sodium phosphate buffer,阿莫西林(聚合物),Amoxicillin,Column:Zenix-100(3 m,100,7.8 x 300 mm)Mobile phase:150 mM phosphate buffer(pH 7.0)Flow rate:1.0 mL
4、/minDetector:UV 215 nmColumn temperature:Room temperature Samples:0.2 mg/mL Biapenem in mobile phase,2 hours old sample,比阿培南(聚合物),Biapenem,磺苄西林钠(聚合物),Column:Zenix SEC-150(3 m,150,7.8 x 300 mm)Mobile phase:150 mM Sodium phosphate buffer(pH 7.0)Flow rate:0.8 mL/minDetector:UV 231 nmColumn temperature:
5、Room temperature Samples:0.5 mg/mL Sulbenicillin sodium in water,磺苄西林钠破坏物的检测,Column:Zenix SEC-150(3 m,150,7.8 x 300 mm)Mobile phase:150 mM Sodium phosphate buffer(pH 7.0)Flow rate:0.8 mL/minDetector:UV 231 nmColumn temperature:Room temperature Samples:Destroyed by Alkali,磺苄西林钠破坏前后对比图,美洛西林钠(聚合物),Colu
6、mn:SRT-C 100(3 m,100,7.8 x 300 mm)Mobile phase:50 mM Sodium phosphate buffer(pH 7.0)Flow rate:1.0 mL/minDetector:UV 230 nmColumn temperature:23 Injection volume:20 LSample:10 mg/mL Mezlocillin sodium in water,Mezlocillin sodium,泰比培南酯,Column:Mono GPC-100(5 m,100,7.8 x 300 mm)Mobile phase:DMF+30 mM Li
7、BrFlow rate:0.8 mL/minDetector:UV 280 nmColumn temperature:Room temperature Injection volume:5 LSample:1 mg/mL Tebopenem Pivoxil in DMF,头孢丙烯(聚合物),Column:SRT SEC-100(5 m,7.8x300 mm)Mobile phase:0.1 M soduim phosphate buffer(pH 7.0)Flow rate:0.8 mL/minDetector:UV 254 nmColumn temperature:25 Injection
8、volume:20 LSample:3.0 mg/mL Cefprpzil in water,Cefprozil,头孢泊肟酯(聚合物),Column:Mono GPC-100(5 m,100,7.8 x 300 mm)Mobile phase:DMF+30 mM LiBrFlow rate:0.8 mL/minDetector:UV 280 nmColumn temperature:Room temperatureInjection volume:10 LSample:0.2 mg/mL Cefpodoxime proxetil in DMF,Minutes,18,头孢地尼(聚合物),Colu
9、mn:SRT SEC-100(5 m,100,7.8 x 300 mm)Mobile phase:100 mM Sodium phosphate buffer(pH 7.0):ACN=95:5(v/v)Flow rate:1.0 mL/minDetector:UV 254 nm Column temperature:25 Injection volume:20 LSample:1.0 mg/mL Cefdinir in 100 mM sodium phosphate buffer,Cefdinir,Column:Mono GPC-100(5 m,100,7.8 x 300 mm)Mobile
10、phase:DMF+30 mM LiBrFlow rate:0.8 mL/minDetector:UV 280 nmColumn temperature:Room temperatureInjection volume:10LSample:0.2 mg/mL Cefuroxime 1-acetoxyethyl ester in DMF,头孢呋辛酯(聚合物),20,Column:SRT SEC-150(5 m,150,7.8 x 300 mm)Mobile phase:150 mM Sodium phosphate buffer(pH 7.0)Flow rate:1.0 mL/minDetect
11、or:UV 254 nmColumn temperature:Room temperature Injection volume:5 LSample:5 mg/mL Cefaclor in mobile phase,头孢克洛原料药(聚合物),Cefaclor,21,头孢拉定(聚合物),Column:SRT SEC-150(5 m,150,7.8 x 300 mm)Mobile phase:100 mM Sodium phosphate buffer(pH 7.0):ACN=95:5(v/v)Flow rate:1.0 mL/minDetector:UV 254 nm Column temper
12、ature:25 Injection volume:20 LSample:1.0 mg/mL Cephradine in 100 mM sodium phosphate buffer,Cephradine,22,头孢硫脒(聚合物),Column:SRT SEC-150(5 m,150,7.8 x 300 mm)Mobile phase:150 mM Sodium phosphate buffer(pH 7.0)Flow rate:1.0 mL/minDetector:UV 254 nmColumn temperature:Room temperatureInjection volume:20
13、LSample:1 mg/mL Cephathiamidine in mobile phase,Cephathiamidine,23,头孢尼西(聚合物),Column:SRT-100(5 m,100,7.8 x 300 mm)Mobile phase:100 mM Sodium phosphate buffer(pH 7.0):ACN=95:5(v/v)Flow rate:1.0 mL/minDetector:UV 254 nm Column temperature:25 Injection volume:20 LSample:1.0 mg/mL Cefonicid in 100 mM sod
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