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Echinacoside
Echinacoside
【Synonym】Echinoside
【Structural formula】
【Molecular formula and molecular weight】C 35 H 46 O 20 ;786.
[Source] The stem of the dry scale leaves of Cistanche deserticola, a plant of the family Cistanche deserticola
【Properties】Light yellow amorphous powder
This product is easily soluble in methanol and water
Melting point: 166.
【Purity Check】
TLC
1.
Developing solvent of methanol - water - acetic acid (2:7:1)
Inspection of 5% FeCl 3 ethanol solution, ultraviolet light (365nm) and inspection under sunlight
2.
Developing solvent ethyl acetate - methanol and 9% acetic acid (20:3:2)
Check 5% FeCl 3 ethanol solution, check under sunlight
High performance liquid chromatography
Chromatographic column C 18 , 5um (4.
Mobile phase acetonitrile-methanol-1% formic acid (10:15:75), 1ml/min
Detection wavelength 335nm, 290nm
【Structural identification】334,290,204
3377, 1699, 1604, 1522, 1446, 1373, 1281, 1159, 1045, 814
ESI-MS m/z: 804[M+NH4] +
1 H-NMR (CD 3 OD) δ: 7.
13 C-NMR (CD 3 OD) δ: 131.
【Storage】Dry and airtight