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A sensitive RP-HPLC method is presented for the simultaneous quantification of Fluorometholone (FLM) and Tetrahydrozoline hydrochloride (THZ). The method has the advantages of being rapid, accurate, reproducible, ecologically acceptable and sensitive. The separation utilized C8 Xbridge® column and mobile phase mixture of Acetonitrile/phosphate buffer pH 3 ± 0.1 (70:30, v/v) with UV detection at 230 nm. Stepwise optimization and factors affecting separation are properly discussed. Different factors were optimized such as stationary phase, selection of organic solvent and its content, buffer pH and concentration, flow rate, elution type and detection wavelength. The studied drugs were efficiently separated in 3.4 min with high resolution. Also, two univariate spectrophotometric methods have been optimized for the quantification of the studied drugs. Method 1: dual wavelength for THZ and iso-absorptive point for FLM, Method 2: ratio difference (RD) for THZ and first derivative FLM utilizing methanol as a solvent. These methods are accurate, precise with minimal data manipulation. Greenness of the methods was estimated using eco-scale tool where the presented methods were found to be excellent green with eco-score of 83 for HPLC and 80 for spectrophotometry. The methods are validated in conformance with ICH guidelines, with acceptable accuracy, precision, and selectivity. The suggested methods can be employed for the economic analysis of THZ and FLM in their pure form and binary ophthalmic formulation, that can be employed by quality control laboratories.
Czasopismo
Rocznik
Tom
Strony
216--227
Opis fizyczny
Bibliogr. 41 poz., rys., tab.
Twórcy
autor
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, El-Kasr ElAini Street, 11562, Cairo, Egypt,
autor
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, El-Kasr ElAini Street, 11562, Cairo, Egypt,
autor
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, El-Kasr ElAini Street, 11562, Cairo, Egypt,
autor
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, El-Kasr ElAini Street, 11562, Cairo, Egypt,
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
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