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Ethyl Caffeate
Caffeoyl acetate
【Structural formula】
[Molecular formula and molecular weight] C 11 H 12 O 4 ; 208.
[Source] Reagents
[Properties] khaki powder
This product is easily soluble in methanol , ethanol and acetone
Melting point: 145.
【Purity Check】
TLC
1.
Developing solvent chloroform - methanol - formic acid (9:1: 0.
Check under UV lamp (254nm)
2.
Developing agent toluene- chloroform -acetone-formic acid (4:1:2:0.
Check under UV lamp (254nm)
High performance liquid chromatography
Chromatographic column C 18 , 5um (4.
Mobile phase acetonitrile-water gradient elution, 1ml/min
Detection wavelength 325nm
【Structural identification】218,244,328
3437, 3178, 1660, 1608, 1533, 1444, 1404, 1306, 1282, 1219, 974, 814
FAB-MS m/z: 417[2M+H] + , 231[M+Na] + , 209[M+H] +
1 H-NMR (DMSO) δ: 7.
13 C-NMR (DMSO) δ: 125.
【Storage】Dry and airtight
.
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