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Crystal blue glycoside
Monotropein
【Structural formula】
[Molecular formula and molecular weight] C 16 H 22 O 11 ; 390.
[Source] Pyrola calliantha H.
【Properties】White powder
This product is soluble in water and methanol
Melting point: 147.
【Purity Check】
TLC
1.
Developing solvent n-butanol - acetic acid - water (5:4:1)
Check under UV light (366nm) before color development, and under UV light (366nm) after color development with 10% sulfuric acid ethanol solution
2.
Developing solvent ethyl acetate - methanol - water - acetic acid (5:1.
Check under UV light (366nm) before color development, and under UV light (366nm) after color development with 10% sulfuric acid ethanol solution
High performance liquid chromatography
Column Agilent Zorbax C 18 , 5um (4.
The mobile phase methanol - 0.
Detection wavelength 235nm
【Structural identification】235
3570, 3359, 1674, 1615, 1188, 1045, 992, 866, 793
ESI-MS m/z: 413 [M+Na] +
1 H-NMR (D 2 O) δ: 7.
13 C-NMR (D 2 O) δ: 97.
【Storage】Dry and airtight
.