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Simultaneous determination of retinoic acid and hydroquinone in skin ointment using spectrophotometric technique (ratio difference method)

机译:分光光度法(比例差法)同时测定皮肤软膏中的维甲酸和对苯二酚

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摘要

An innovative spectrophotometric method was developed for simultaneous determination of compounds with interfering spectra in binary mixtures without previous separation, showing significant advantages over the conventional methods regarding minimal data manipulation and applicability. The proposed method was applied for the determination of retinoic acid and hydroquinone in laboratory-prepared mixtures with mean percentage recoveries 100.13 ± 0.31 and 99.99 ± 0.04, respectively, and in their pharmaceutical formulation with mean percentage recoveries 100.13 ± 0.86 and 100.07 ± 0.58, respectively. The method was validated according to USP guidelines and can be applied for routine quality control testing.
机译:开发了一种创新的分光光度法,可同时测定二元混合物中具有干扰光谱的化合物,而无需事先分离,在最小化数据操作和适用性方面显示出优于常规方法的显着优势。拟议的方法分别用于测定实验室制备的混合物中的维甲酸和对苯二酚,平均回收率分别为100.13±0.31和99.99±0.04,以及其药物制剂中的平均回收率分别为100.13±0.86和100.07±0.58 。该方法已根据USP指南验证,可用于常规质量控制测试。

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