I did a bit more research on it, and the E part is an ether...but I think the chemical structure shown on the screen doesn't match the description shown by the on screen text - The molecule shown is depicted as glycerol. Glycerol has 3 carbons and 3 hydroxyl functional groups (as shown on the on screen text). One of the hydrogens has been removed and replaced by an ether (E), therefore it is a glycerol ether, rather than glycerol itself. Does that kind of make sense?
Like you said, it could be just that describing it accurately would have been too long winded and complicated, particularly for viewers who aren't really interested in the science aspect.
Last edited by Sherlock Holmes (April 8, 2012 11:02 pm)