Related substances in pharmaceutical formulations are associated with their safety, efficacy and stability. However, there is no overall study already published on the assessment of related substances in the Compound ...Related substances in pharmaceutical formulations are associated with their safety, efficacy and stability. However, there is no overall study already published on the assessment of related substances in the Compound Ketoconazole and Clobetasol Propionate Cream. In this work, a reliable HPLC-TOF-MS qualitative method was developed for the analysis of related substances in this preparation with a quick and easy extraction procedure. Besides the active pharmaceutical ingredients, two compounds named ketoconazole impurity B′ optical isomer and ketoconazole impurity E were identified. Furthermore, a new HPLC method for qualitative and quantitative assessment on related substances and degradation products, which were found in the stability test, was established and validated. The single standard to determine multi-components method was applied in the quantitative analysis, which was an effective way for reducing cost and improving accuracy. This study can provide a creative idea for routine analysis of quality control of the Compound Ketoconazole and Clobetasol Propionate Cream.展开更多
目的通过高效液相色谱-飞行时间质谱(HPLC-TOF-MS)联用技术,对中药复方芎归汤中的主要化学成分进行有效鉴定。方法色谱分离采用资生堂CAPCELL PAK C18反相柱(100mm×3.0mm,3μm),流动相组成分别为0.1%甲酸水溶液和乙腈,梯度洗脱,流...目的通过高效液相色谱-飞行时间质谱(HPLC-TOF-MS)联用技术,对中药复方芎归汤中的主要化学成分进行有效鉴定。方法色谱分离采用资生堂CAPCELL PAK C18反相柱(100mm×3.0mm,3μm),流动相组成分别为0.1%甲酸水溶液和乙腈,梯度洗脱,流速为0.4ml/min;质谱定性采用飞行时间质谱,正离子模式扫描。结果在优化的液质联用条件下,通过飞行时间质谱鉴定了芎归汤中47种主要成分,并对其药材来源进行了归属。结论通过HPLC-TOF-MS联用技术,为鉴定芎归汤中的化学成分建立起了一种快速、高效的分析方法。展开更多
文摘Related substances in pharmaceutical formulations are associated with their safety, efficacy and stability. However, there is no overall study already published on the assessment of related substances in the Compound Ketoconazole and Clobetasol Propionate Cream. In this work, a reliable HPLC-TOF-MS qualitative method was developed for the analysis of related substances in this preparation with a quick and easy extraction procedure. Besides the active pharmaceutical ingredients, two compounds named ketoconazole impurity B′ optical isomer and ketoconazole impurity E were identified. Furthermore, a new HPLC method for qualitative and quantitative assessment on related substances and degradation products, which were found in the stability test, was established and validated. The single standard to determine multi-components method was applied in the quantitative analysis, which was an effective way for reducing cost and improving accuracy. This study can provide a creative idea for routine analysis of quality control of the Compound Ketoconazole and Clobetasol Propionate Cream.
文摘目的通过高效液相色谱-飞行时间质谱(HPLC-TOF-MS)联用技术,对中药复方芎归汤中的主要化学成分进行有效鉴定。方法色谱分离采用资生堂CAPCELL PAK C18反相柱(100mm×3.0mm,3μm),流动相组成分别为0.1%甲酸水溶液和乙腈,梯度洗脱,流速为0.4ml/min;质谱定性采用飞行时间质谱,正离子模式扫描。结果在优化的液质联用条件下,通过飞行时间质谱鉴定了芎归汤中47种主要成分,并对其药材来源进行了归属。结论通过HPLC-TOF-MS联用技术,为鉴定芎归汤中的化学成分建立起了一种快速、高效的分析方法。