== removal of useful information == 

 Hello Edgar, 
 On 12th April I took time to correct information within the entry for SQDG. In response, you removed the box that I had corrected. Now there is no picture of the structure, no atomic formula and calculated mass. This is clearly a step backwards. I understand the point about a class of compounds but suggest this be handled by showing the structure and atomic formula for a common example. SQDG from spinach has predominantly 16:0 and 18:3 fatty acids. 
 With respect, 
 Julian 

  
 Julian Whitelegge 
 Professor, 
 The Pasarow Mass Spectrometry Laboratory 
 The NPI-Semel Institute, 
 David Geffen School of Medicine, UCLA 
 Tel. 310 794 5156 
 jpw@chem.ucla.edu