PDF
Full
Outline
To establish an HPLC method for determination of related substances in apixaban API.
The analytical column was an ACE Excel3 C18-PFP (150 mm×4.6 mm, 3 μm）. The mobile phase A was buffer(30 mmol·L-1 ammonium acetate in water)-acetonitrile（90∶10） and the mobile phase B was buffer(30 mmol·L-1 ammonium acetate in water)-acetonitrile（5∶95）. The whole run carried out by gradient elution at a flow rate of 1.2 mL·min-1. The detection wavelength was set at 280 nm, the column temperature was 40 ℃ and the injection volume was 10 μL.
Apixaban was separated completely from the impurities and degradation products(the resolution>2.0). The test solution was stable for at least 48 h. The LOQs of apixaban, methyl ester product, ethyl ester product, chlorine impurity, dehydrogenation impurity, bihydrolytic impurity, ringopen methyl ester product, cyclate, impurity D, hydrolytic impurity, ringopen acid impurity, ringopen amide impurity and 5-chlorhexyl chloride derived impurity, were all 0.05%. The linear correlation coefficients of apixaban, methyl ester product, ethyl ester product, hydrolytic impurity, ringopen acid impurity, ringopen amide impurity and 5-chlorhexyl chloride derived impurity were all more than 0.99. The range were from the LOQ for impurity content to 150% of the target concentration. The average recoveries（RSD）(n=9) of methyl ester product, ethyl ester product, hydrolytic impurity, ringopen acid impurity, ringopen amide impurity and 5-chlorhexyl chloride derived impurity were 102.0%（2.7%）, 106.4%（2.2%）, 111.2%（4.0%）, 104.4%（2.9%）, 102.9%（2.7%）, 101.8%（2.9%）. The repeatability and intermediate precision completely met the requirements. The impurities contents in three batches of apixaban API 6 months accelerate stability test completely met the requirements, respectively.
This method is simple, rapid, sensitive and specific to be used for the determination of related substances in apixaban API.
PDF
74
32
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
