按尺寸计量聚乙烯甘醇,使用充电喷雾剂,差异折射率和多角度光散射探测器进行排斥色谱
Jenny Wang1, Shijia Tang1, Kelly Zhang1
1Synthetic Molecule Analytical Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, United States.
Journal of pharmaceutical and biomedical analysis
|November 28, 2023
概括
这项研究比较了使用尺寸排除色谱测量聚乙烯糖醇 (PEG) 的三个检测器. 不同折射率 (dRI) 探测器为各种PEG结构和分子重量提供了最普遍的响应.
科学领域:
- 制药分析 制药分析
- 聚合物表征 聚合物表征
- 染色学技术 染色学技术的使用
背景情况:
- 聚乙烯甘醇 (PEG) 对于PEG化药物至关重要,增强药物动力学特性和疗效.
- 准确的PEG的表征和定量对于制造控制和药物产品质量至关重要.
- 根据PEG结构和检测方法,PEG测定值可能会有很大差异.
研究的目的:
- 开发和评估用于定量PEG分析的尺寸排除色谱 (SEC) 方法.
- 为了比较充电的气溶探测器 (CAD),差异折射率 (dRI) 和多角度光散射 (MALS) 探测器的性能,用于PEG量化.
- 了解分子量和结构对PEG检测反应的影响.
主要方法:
- 开发了一种用于PEG分析的尺寸排除色谱 (SEC) 方法.
- 评估了14种PEG化合物,其分子重量从1到40kDa,结构多样 (线性,分支,Y形,多臂).
- 系统地评估在线CAD,dRI和MALS检测器的性能.
主要成果:
- 该dRI探测器在不同PEG分子重量和几何形状中展示了最普遍的响应.
- 在CAD和MALS探测器中,分子重量依赖和几何依赖的反应呈现出来.
- CAD和MALS显示多臂PEG的相对响应因子与相反相关,从而使质量架构评估成为可能.
结论:
- 该dRI探测器最适合于通用PEG量化,而CAD和MALS提供了对聚合物架构的见解.
- 对比探测器分析为制药开发中的PEG量化提供了基本的理解.
- 这项工作支持治疗制造中高质量的PEG的工艺开发和质量控制.
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