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Phenylethanoloside B
Calceolarioside B
【Synonyms】heba anthocyanin B
【Structural formula】
[Molecular formula and molecular weight] C 23 H 26 O 11 ; 478.
[Source] Akebia trifoliate (Thunb.
【Properties】White powder
This product is easily soluble in methanol
Melting point: 93.
【Purity Check】
TLC
1.
Developing solvent ethyl acetate - methanol - water - carboxylic acid (100:17: 13: 0.
Check 5% FeCl 3 solution, check under sunlight
2.
Developing solvent chloroform - methanol - water (1) to prepare
Check 2% vanillin sulfuric acid solution, heated at 105°C until the spots appear clear, check under sunlight
High performance liquid chromatography
Chromatographic column Agilent SB C 18 , 5um (4.
Mobile phase methanol-0.
Detection wavelength 330nm, 324nm
[Structural identification] 216, 290, 329
3350, 2940, 1690, 1650, 1600, 1515
ESI-MS m/z: 477[M—H] -
1 H-NMR (CD 3 OD) δ: 2.
13 C-NMR (CD 3 OD) δ: 131.
【Storage】Dry and airtight
.