CN113640403A - 甲磺酸帕珠沙星原料药的含量检测方法 - Google Patents
甲磺酸帕珠沙星原料药的含量检测方法 Download PDFInfo
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- 229960002625 pazufloxacin Drugs 0.000 title claims abstract description 56
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- 239000012085 test solution Substances 0.000 claims description 17
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Abstract
本申请公开了一种甲磺酸帕珠沙星原料药的含量检测方法,采用高效液相色谱对其含量进行检测,所述高效液相色谱的色谱条件如下:固定相:十八烷基硅烷键合硅胶,流动相:体积比为30:10:7:170的乙腈‑10%甲磺酸三乙胺溶液‑1.0mol/L磷酸氢二钾‑水,流速:0.8‑1.2ml/min,检测波长:250‑260nm,理论塔板数:大于等于2000。本申请采用特定配比的流动相来检测甲磺酸帕珠沙星的含量,所获得的色谱图中主药甲磺酸帕珠沙星与其它杂质成分分离良好,且主药甲磺酸帕珠沙星的保留时间适宜,因此,本申请提供的方法可以准确地对甲磺酸帕珠沙星原料药的含量进行检测,有利于对药品进行质量控制。
Description
技术领域
本发明涉及甲磺酸帕珠沙星的质量控制领域,特别涉及一种甲磺酸帕珠沙星的含量检测方法。
背景技术
甲磺酸帕珠沙星(PazufloxacinMesylate)是喹诺酮类药物中的一种,其化学名称为(S)-(-)-10-(1-氨基环丙基)-9-氟-3-甲基-7-氧代-2,3-二氢-7H-吡啶[1,2,3-de][1,4]苯并噁嗪-6-羧酸甲磺酸盐,分子式C16H15FN2O4·CH4O3S,化学结构式如下:
作为原料药而言,对甲磺酸帕珠沙星的含量进行检测,是药品质量控制中所必不可少的。
发明内容
有鉴于此,本发明提供了一种甲磺酸帕珠沙星原料药的含量检测方法。
技术方案具体如下:
一种甲磺酸帕珠沙星原料药的含量检测方法,采用高效液相色谱对其含量进行检测,所述高效液相色谱的色谱条件如下:
固定相:十八烷基硅烷键合硅胶,
流动相:体积比为30:10:7:170的乙腈-10%甲磺酸三乙胺溶液-1.0mol/L磷酸氢二钾-水,
流速:0.8-1.2ml/min,
检测波长:250-260nm,
理论塔板数:大于等于2000。
在本申请的一些实施方式中,该方法包括以下步骤:
配制甲磺酸帕珠沙星原料药的供试品溶液以及甲磺酸帕珠沙星的对照品溶液;
将所述供试品溶液和所述对照品溶液分别注入液相色谱仪,记录色谱图,
分别量取供试品溶液色谱图中的甲磺酸帕珠沙星的峰面积和对照品溶液色谱图中的甲磺酸帕珠沙星的峰面积,按外标法以峰面积计算甲磺酸帕珠沙星原料药中甲磺酸帕珠沙星的含量。
在本申请的一些实施方式中,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度和所述对照品溶液中甲磺酸帕珠沙星对照品的浓度相同。
在本申请的一些实施方式中,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度为32.8~164.0μg/ml。
在本申请的一些实施方式中,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度为100μg/ml。
在本申请的一些实施方式中,配制所述供试品溶液和所述对照品溶液的溶剂为流动相。
在本申请的一些实施方式中,检测波长为254nm。
在本申请的一些实施方式中,流速为1.0ml/min。
有益效果
本申请采用特定配比的乙腈-10%甲磺酸三乙胺溶液-1.0mol/L磷酸氢二钾-水(30:10:7:170)作为流动相来检测甲磺酸帕珠沙星的含量,所获得的色谱图中主药甲磺酸帕珠沙星与其它杂质成分分离良好,且主药甲磺酸帕珠沙星的保留时间适宜,因此,本申请提供的方法可以准确地对甲磺酸帕珠沙星原料药的含量进行检测,有利于对药品进行质量控制。
附图说明
图1A为实施例1中在流动相(1)的条件下,甲磺酸帕珠沙星原料药的HPLC色谱图;
图1B为实施例1中在流动相(2)的条件下,甲磺酸帕珠沙星原料药的HPLC色谱图;
图2为实施例2中甲磺酸帕珠沙星对照品的HPLC色谱图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚,下面通过具体实施例将对本申请的技术方案进行清楚、完整地描述。
需要说明的是,以下实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
实施例1流动相的考察
分别以下表1中记载的流动相(1)和流动相(2)作为流动相对甲磺酸帕珠沙星原料药进行HPLC分析,考察不同流动相下色谱的分离度。
表1
流动相(1) | 乙腈-10%甲磺酸三乙胺-1M磷酸氢二钾-水=30:10:7:153 |
流动相(2) | 乙腈-10%甲磺酸三乙胺-1M磷酸氢二钾-水=30:10:7:170 |
其中,10%甲磺酸三乙胺溶液的配制如下:
在冰浴的条件下,于200ml水中缓慢加入甲磺酸30ml,三乙胺30ml,溶解完全后,加水至300ml。
具体实验步骤如下:
分别以流动相(1)和流动相(2)为溶剂配制每1ml约含100μg甲磺酸帕珠沙星原料药的供试品溶液(1)和供试品溶液(2)。
量取10μl供试品溶液(1),注入液相色谱仪,记录色谱图,如图1A所示。
量取10μl供试品溶液(2),注入液相色谱仪,记录色谱图,如图1B所示。
相关色谱条件包括:色谱柱:ODS色谱柱250×4.6mm(i.d.)5μm,固定相:十八烷基硅烷键合硅胶,流速:1.0ml/min,检测波长:254nm。
将图1A和图1B进行比较可以看出,在流动相(1)的条件下,色谱图中杂质峰与主药甲磺酸帕珠沙星的分离并不理想。相反,在流动相(2)的条件下,色谱图中杂质峰与主药甲磺酸帕珠沙星的分离良好,均达到基线分离,分离度大于1.5。
由此确定以流动相(2)作为流动相进行后续实验以及甲磺酸帕珠沙星原料药的含量检测。
实施例2理论塔板数的确定
(1)色谱柱的理论塔板数(n):按照高效液相色谱法(中国药典2000年版二部附录VD)系统适用性方法下操作,在流动相(2)的条件下,量取甲磺酸帕珠沙星对照品溶液10μl,注入液相色谱仪,记录色谱图,量取保留时间tR和Wh/2,计算,见图2。
n=5.54×(tR/Wh/2)2=5.54×(11.633/0.233)2=1.38×104
实施例3线性范围考察与标准曲线绘制
精密称取甲磺酸帕珠沙星对照品约16mg,置50ml容量瓶中,加流动相溶解并稀释至刻度,摇匀。分别精密量取1、2、3、4、5ml置10ml量瓶中,加流动相稀释至刻度,摇匀。分别取溶液10μl分别注入色谱仪,记录色谱图,量取峰面积,由溶液浓度(C)对峰面积(A)线性回归,得回归方程。结果见表2。
表2甲磺酸帕珠沙星含量测定标准曲线绘制结果
上表结果表明:在32.8~164.0μg/ml浓度间,本法的线性良好。
实施例4甲磺酸帕珠沙星原料药的含量测定
对本公司自制的三批次甲磺酸帕珠沙星原料药(0125、0224、0324)进行含量测定。
色谱条件:色谱柱:ODS色谱柱250×4.6mm(i.d.)5μm;乙腈-10%甲磺酸三乙胺溶液-1.0mol/L磷酸氢二钾-水(30:10:7:170)为流动相,检测波长为254nm。理论板数以甲磺酸帕珠沙星峰计算应不低于2000。
检测步骤如下:取甲磺酸帕珠沙星原料药适量,精密称定,用流动相溶解并稀释制成每1ml约含100μg的溶液,作为供试品溶液。
精密量取10μl,注入液相色谱仪,记录色谱图,量取峰面积。
另取经105℃干燥至恒重的甲磺酸帕珠沙星对照品,用与甲磺酸帕珠沙星原料药相同的方法配制对照品溶液,并量取10μl,注入液相色谱仪,记录色谱图,量取峰面积。
按外标法以峰面积计算甲磺酸帕珠沙星原料药中甲磺酸帕珠沙星的含量,结果如下表3所示。
表3甲磺酸帕珠沙星原料含量测定结果
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (8)
1.一种甲磺酸帕珠沙星原料药的含量检测方法,其特征在于,采用高效液相色谱对其含量进行检测,所述高效液相色谱的色谱条件如下:
固定相:十八烷基硅烷键合硅胶,
流动相:体积比为30:10:7:170的乙腈-10%甲磺酸三乙胺溶液-1.0mol/L磷酸氢二钾-水,
流速:0.8-1.2ml/min,
检测波长:250-260nm,
理论塔板数:大于等于2000。
2.如权利要求1所述的方法,其特征在于,包括以下步骤:
配制甲磺酸帕珠沙星原料药的供试品溶液以及甲磺酸帕珠沙星的对照品溶液;
将所述供试品溶液和所述对照品溶液分别注入液相色谱仪,记录色谱图,
分别量取供试品溶液色谱图中的甲磺酸帕珠沙星的峰面积和对照品溶液色谱图中的甲磺酸帕珠沙星的峰面积,按外标法以峰面积计算甲磺酸帕珠沙星原料药中甲磺酸帕珠沙星的含量。
3.如权利要求1所述的方法,其特征在于,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度和所述对照品溶液中甲磺酸帕珠沙星对照品的浓度相同。
4.如权利要求3所述的方法,其特征在于,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度为32.8~164.0μg/ml。
5.如权利要求3所述的方法,其特征在于,所述供试品溶液中甲磺酸帕珠沙星原料药的浓度为100μg/ml。
6.如权利要求1所述的方法,其特征在于,配制所述供试品溶液和所述对照品溶液的溶剂为流动相。
7.如权利要求1所述的方法,其特征在于,检测波长为254nm。
8.如权利要求1所述的方法,其特征在于,流速为1.0ml/min。
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