GlcNAca/b1-3Xyla-4Galb1-3GalNAca1-4(NeuAc?1-2NeuGc4Mea1-3)GalNAcb1-4(EtnP-6)GlcNAcb1-3Manb1-4Glcb1-1Cer
|
|
Structural Information
|
|
12,13-Dihydroxy-11-Methoxy-9-Octadecenoic Acid
|
|
|
|
|
Formula
|
C19H36O5
|
Exact Mass
|
344.256274262
|
Average Mass
|
344.48614000000003
|
SMILES
|
CCCCCC(O)C(O)C(OC)C=CCCCCCCCC(O)=O
|
Physicochemical Information
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Spectral Information
|
Mass Spectra
|
GC-EI-MS(after methanolysis and trimethylsilylation)
Gardner et al.: m/e=227[CHOCH3CH=CH(CH2)7COOCH3], 300[227+TMS], 275[M-227], 185[275-HOTMS], 173[SMTO=CH(CH2)4CH3]
|
UV Spectra
|
|
IR Spectra
|
Methyl ester(CS2)
Gardner et al.: cis olefin(750cm-1), OH(3550 and 3490cm-1)
|
NMR Spectra
|
1H-NMR(methyl ester; CDCl3,300MHz)
Gardner et al.: C9(5.74ppm), C10(5.37ppm), C11(4.11ppm), C12(3.62ppm), C13(3.45ppm), C11OCH3(3.27ppm), C12OH(2.39ppm), C13OH(2.70ppm), J9-10=11.2Hz(cis unsaturation)
|
Other Spectra
|
|
Chromatograms
|
|