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Simultaneous RP-HPLC determination of sparfloxacin and dexamethasone in pharmaceutical formulations
Razzaq, Syed Naeem; Ashfaq, Muhammad; Mariam, Irfana; Khan, Islam Ullah; Razzaq, Syed Saleem.
  • Razzaq, Syed Naeem; Government College University. Department of Chemistry. Lahore. PK
  • Ashfaq, Muhammad; Government College University. Department of Chemistry. Lahore. PK
  • Mariam, Irfana; Government College University. Department of Chemistry. Lahore. PK
  • Khan, Islam Ullah; Government College University. Department of Chemistry. Lahore. PK
  • Razzaq, Syed Saleem; Government College University. Department of Chemistry. Lahore. PK
Braz. j. pharm. sci ; 49(2): 301-309, Apr.-June 2013. ilus, graf, tab
Article in English | LILACS | ID: lil-680641
ABSTRACT
The present study describes the development and subsequent validation of simple and accurate stability indicating RP-HPLC method for the determination of sparfloxacin and dexamethasone in pharmaceutical formulations in the presence of their stress-induced degradation products. Both the drugs and their stress-induced degradation products were separated within 10 minutes using C8 column and mixture of methanol and 0.02 M phosphate buffer pH 3.0 (6040 v/v, respectively) as mobile phase at 270 nm using diode array detector. Regression analysis showed linearity in the range of 15-105 µg/mL for sparfloxacin and 5-35 µg/mL for dexamethasone. All the analytes were adequately resolved with acceptable tailing. Peak purity of the two drugs was also greater than 0.9999, showing no co-elution peaks. The developed method was applied for simultaneous determination of sparfloxacin and dexamethasone in pharmaceutical formulations for stability studies.
RESUMO
O presente estudo descreve o desenvolvimento e a subsequente validação de indicador de estabilidade simples e acurada por RP-HPLC para a determinação de esparfloxacino e dexametasona em formulações farmacêuticas na presença de produtos de degradação induzidos por estresse. Tanto os fármacos quanto os produtos de degradação induzidos pelo estresse foram separados em 10 minutos, utilizando coluna C8 e mistura de methanol e tampão fosfato 0,02 M, pH 3,0 (6040 v/v, respectivamente) como fase móvel e detector de arranjo de diodo a 270 nm, A análise de regressão mostrou linearidade na faixa de 15-105 µg/mL para esparfloxacino e 5-35 µg/mL para a dexametsona. Todos os analitos foram resolvidos adequadamente com tailing aceitável. O pico de pureza dos dois foi maior que 0.9999, não mostrando picos de co-eluição. O método desenvolvido foi aplicado para a determinação simultânea de esparfloxacino e dexametasona em formulações farmacêuticas e para estudos de estabilidade.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Dexamethasone / Chemistry, Pharmaceutical / Chromatography, High Pressure Liquid Type of study: Diagnostic study Language: English Journal: Braz. j. pharm. sci Year: 2013 Type: Article Affiliation country: Pakistan Institution/Affiliation country: Government College University/PK

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Full text: Available Index: LILACS (Americas) Main subject: Dexamethasone / Chemistry, Pharmaceutical / Chromatography, High Pressure Liquid Type of study: Diagnostic study Language: English Journal: Braz. j. pharm. sci Year: 2013 Type: Article Affiliation country: Pakistan Institution/Affiliation country: Government College University/PK