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Ecdysterone
Ecdysterone
[Synonyms] β-ecdysone, 20-hydroxyecdysone
【Structural formula】
[Molecular formula and molecular weight] C 27 H 44 O 7 ; 480.
[Source] Cyanotis arachnoidea CBClarke whole plant
【Properties】White powder
This product is easily soluble in ethanol, slightly soluble in acetone , slightly soluble in ethyl acetate, chloroform and hot water, and almost insoluble in ether
Melting point: 234.
Optical rotation: [α] D 20 +60° (C0.
【Purity Check】
TLC
1.
Developing solvent ethyl acetate - methanol (65:35:10)
Check under UV light (254nm), then use vanillin concentrated sulfuric acid to develop color and check under visible light
2.
Developing agent chloroform-ethanol (4:1)
Check under the ultraviolet light (254nm), then use vanillin concentrated sulfuric acid to develop the color, and then check the high performance liquid chromatography under visible light.
Chromatographic column AichromHypersilC 18 , 5um (4.
Mobile phase methanol-water (4:1), 1ml/min
Detection wavelength 243nm, 260nm
Differential calorimetry
Start temperature 50℃, end temperature 300℃, heating rate 5℃/min
[Structural identification] 238,204
3462, 1649
ESI-MS m/z: 481 [M+H] +
1 H-NMR (C 5 D 5 N) δ: 6.
13 C-NMR (C 5 D 5 N) δ: 37.
【Storage】Dry and airtight
.