Determination of the related substances in the etoricoxib tablets by HPLC / 国际药学研究杂志
Journal of International Pharmaceutical Research
;
(6): 795-799, 2019.
Article
in Chinese
| WPRIM
| ID: wpr-845247
ABSTRACT
Objective:
To establish and validate a high performance liquid chromatography(HPLC)method for the determination of related substances in etoricoxib tablets.Methods:
The related substances in the etoricoxib tablets were determined by HPLC. The Waters C18 column(4.6 mm×150 mm,3.5 μm)was used. The mobile phase consisted of the aqueous 0.02 mol/L sodium dihydrogen phosphate solution and acetonitrile(7129,V/V)and the flow rate was 0.6 ml/min. The detection wavelength was 235 nm. The column temperature was 40℃ and the injection volume was 10 μl.Results:
The etoricoxib related substances and other degraded substances in the forced degradation test of etoricoxib were com- pletely separated under the HPLC conditions. The quantification limit and the detection limit were 0.5 ng and 1.0 ng both for etoricoxib and its N-oxide,respectively. The calibration curves showed a good linearity within the range of 61.14- 152.85 μg/ml for etoricoxib and 61.50-153.75 μg/ml for the N-oxide. The recoveries of etoricoxib and its N-oxide were both within the range of 98%-102%. The solution used for determining the related substances were kept stable within 12 h at room temperature.Conclusion:
The established HPLC method showed good specificity,sensitivity and accuracy,which could be used for the determination of related substances in the etoricoxib tablets.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Journal of International Pharmaceutical Research
Year:
2019
Type:
Article
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