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COMPARATIVE STUDY OF CHROMATOGRAPHIC, SPECTROPHOTOMETRY AND NON AQUEOUS TITRIMETRIC METHODS FOR DETERMINATION OF PROTEASE INHIBITOR IN TABLETS

机译:色谱,分光光度法和非水滴定法测定片剂中蛋白酶抑制剂的比较研究

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The paper describes HPLC, UV spectrophotometric and non aqueous titrimetric method for the estimation of poorly water soluble protease inhibitor i.e. Ritonavir in raw material and tablet dosage form. HPLC analysis was carried out in a CI 8 column using acetonitrile, methanol, and buffer in the ratio 60: 20: 20 (v/v/v) at 240 nm. For the spectrophotometric determination methanolic solution of ritonavir was reacted with 3-Methyl Benzothiazolin-2-one hydrazone (MBTH). The oxidative coupled green coloured chromogen was analysed at 633 nm. Non aqueous titration was carried out using perchloric acid as titrant and the end point was determined using crystal violet as indicator. The three methods were validated and statistically evaluated to correlate the difference between the methods for estimation of Ritonavir in pharmaceutical dosage form.
机译:本文介绍了HPLC,UV分光光度法和非水滴定法来评估水溶性差的蛋白酶抑制剂,即原料药和片剂剂型中的利托那韦。 HPLC分析在CI 8色谱柱中使用乙腈,甲醇和缓冲液,其比例为60:20:20(v / v / v)在240 nm处进行。为了分光光度法测定,将利托那韦的甲醇溶液与3-甲基苯并噻唑啉-2-一(MBTH)反应。在633 nm处分析了氧化偶联的绿色色原。使用高氯酸作为滴定剂进行非水滴定,并使用结晶紫作为指示剂确定终点。验证了这三种方法并对其进行了统计评估,以关联估算药物剂型中利托那韦的方法之间的差异。

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