Search results for "Propyphenazone"

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Clean method for the simultaneous determination of propyphenazone and caffeine in pharmaceuticals by flow injection Fourier transform infrared spectr…

1997

A procedure is proposed for the simultaneous FTIR determination of propyphenazone (PFZ) and caffeine (CAF) in pharmaceuticals. The method involves the dissolution of the active principles in CHCl 3 , followed by filtration of sample solutions to remove the excipients. PFZ is then determined by absorbance measurements at 1595 cm - 1 , using a baseline established between 2000 and 890 cm - 1 , and CAF by using the first-derivative values at 1712 cm - 1 , using solutions of PFZ and CAF for external calibration. The method was applied in both the stopped-flow and flow-injection modes, providing precise and accurate results for the analysis of real samples. The incorporation of a distillation un…

ChemistryChemistry PharmaceuticalAnti-Inflammatory Agents Non-SteroidalAnalytical chemistryInfrared spectroscopyBiochemistryAnalytical Chemistrylaw.inventionSolventAbsorbancelawCaffeineSpectroscopy Fourier Transform InfraredElectrochemistrymedicineSolventsEnvironmental ChemistryFourier transform infrared spectroscopyDissolutionPropyphenazoneDistillationSpectroscopyFiltrationAntipyrinemedicine.drugThe Analyst

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