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To establish a principal component external standard method with HPLC and calibration factors for the determination of 11 impurities in flurbiprofen axetil injection, and to explore its detection results and limit values.
The Thermo BDS Hypersil C18 (250×4.6 mm, 5 μm) was selected for gradient elution, with water-0.15% acetic acid and acetonitrile-0.15% acetic acid as the mobile phase at a flow rate of 1.0 mL·min-1. The column temperature was 40 ℃, the detection wavelength was 254 nm and the injection volume was 10 μL.
Flurbiprofen axetil and 11 impurities were well separated by the method. Good linearity was obtained with correlation coefficients of 1.000 for the 3-fluoro-4-phenylphenol (4-OHB), 1-acetoxyethyl-2-(2-fluoro-4-biphenylyl)-2-hydroxypropionate (2-OHP), 4-acetyl-2-fluorobiphenyl (4-ACB), flurbiprofen ethyl ester, allyl -(2-fluoro-4-biphenyl) propionate (ALE), ChP impurityⅠ , impurity B, impurity C and impurity E in the range of 0.10-20 μg·mL-1. The average recovery rates was from 96.6% to 103.7% and the relative standard deviations(RSDs) were lower than 1.4%. The correction factors of flurbiprofen axetil related substances 4-OHB, 2-OHP,4-ACB, flurbiprofen, flurbiprofen ethyl ester, ALE, ChP impurity Ⅰ, impurity B, impurity C and impurity E were 0.55, 1.05, 1.01, 0.76, 0.95, 0.86, 0.55, 0.93, 0.76 and 0.81, respectively. Notablely, desfluoro fiurbiprofen axetil of detected was around the prescribed limit 0.1%.
The method above is rapid, simple, accurate, and reliable, and can be applied for the determination and quality control of related substances in flurbiprofen axetil injection.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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