An HPLC method was established for the assay of epinephrine sulfonate (impurity F) in epinephrine injection. The determination was performed on an AQUASIL C18 (100 mm × 4.6 mm, 3 μm) column with a gradient elution system, and the mobile phase was consisted of monopotassium phosphate solution (mobile phase A) and acetonitrile (mobile phase B). The injection volume was 40 μL. The detection wavelength was at 210 nm and the column temperature was 25 ℃. The total analytical time was 40 min. The results showed that the standard cure of epinephrine sulfonate (impurity F) between peak area and concentration exhibited good linear relationship within the ranges of 0.520-12.480 μg·mL-1 and the R2 = 0.999 8. The average recovery rate was 103.04% and the RSD was 2.00%. The limit concentration of detection was 0.104 μg·mL-1 and the limit concentration of quantitation was 0.520 μg·mL-1. The method could be applied to the determination of epinephrine sulfonate in epinephrine injection with high accuracy and precision, as well as good sensitivity. It could also enhance the quality standards of epinephrine-related products.
| 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 |