Wm. Craig Byrdwell, phd

Resources for Lipid Analysis in the 21^st Century

For a conveniently printable .pdf version of these structures (2 pages), click HERE

© 2006-2011

The figures and tables on this website are copyrighted in 2006-2011 by William Craig Byrdwell.  If you use these tables please reference

 

www.LCMSofVitaminD.com

NOTES:

Masses of neutral molecules are given.  Protonated molecules, [M+H]⁺, observed by mass spectrometry, are one mass unit higher than the neutral masses.

 

For more information on the structures of Vitamin D isomers, see:

 

Nomenclature of Vitamin D,

Pure & Appl. Chem., 54:1511-1516 (1982).

 

 

For pairs of isomers in which both forms are possible, the most commonly cited isomer is listed first.

 

 

E = ‘entgegen’ (opposite) = trans

Z = ‘zusammen’ (together) = cis

 

 

For more information on

cis / trans isomers, see:

 

Wikipedia E / Z Notation page

 

or the

 

Wikipedia cis / trans Isomerism page

A

C

D