Objective: To establish a quantitative proton nuclear magnetic resonance method for the determination of vemurafenib.Methods:The structure of vemurafenib was confirmed by MS and NMR. The spectra of proton nuclear magnetic resonance spectroscopy were obtained in dimethylsulfoxide-d6 by using Bruker ANANCE NEO 600, the parameters of which were set up as follows: 90° pulse sequences, the relaxation delay time was 15 s, the number for scanning was 32, the experiment temperature was controlled at 25 ℃, and hydroquinone were selected as internal standard. The quantitative study was conducted on vemurafenib.Results:The 1H and 13C NMR spectra of vemurafenib was assigned. The content of vemurafenib determined by qHNMR were 98.78%, which was basically consistent with the results of mass balance method (98.91%).Conclusion:The method is simple, rapid and accurate, and can be used for the determination of vemurafenib.
| 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 |