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A new vardenafil analogue has been discovered in a sexual enhancement health beverage through the application of ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC/Q-TOF MS) and high-performance liquid chromatography-diode array detection (HPLC-DAD). This analogue was then purified via preparative HPLC (Prep-HPLC), and its chemical structure was determined using NMR spectroscopy. Spectral data indicated that the vardenafil analogue possesses an n-propyloxy group in place of the ethoxy group on the aromatic ring, and a hydroxyethyl group in substitution for the ethyl group on the piperazine ring. The compound, termed "propoxyphenyl hydroxyvardenafil", has not been reported in China.
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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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