File talk:Caffeine.svg

Molecules missing?

Is it intuitively obvious to chemistry types that there are C's at most vertices, and also a CH on the far left, in order to make up the C8H10N4O2 count? E.g. compare your picture with [1]. (Er, wait, that one's wrong too??? Missing 2N. Perhaps see also instead... [2] at shopping link [3]) As a layman, I couldn't figure out why the molecule count wasn't right in your version. I'm not familiar with the editing tools for images, and may still need a commons account? Plus I wonder if the diagram obeys some convention for implied C and CH. --SportWagon (talk) 20:03, 21 October 2008 (UTC)[reply]

Answered at Talk:Caffeine. See Skeletal formula.--SportWagon (talk) 20:23, 21 October 2008 (UTC)[reply]

The answer is that , yes, there is a convention for drawing the chain/ring. the CH3 branches are shown in ful to avoid ambiguity. — Preceding unsigned comment added by 202.92.35.71 (talk) 13:00, 4 September 2011 (UTC)[reply]

Coloring?

Are the red and blue colors meant to indicate electronegativity? Or just "not carbons"? Or something else? 212.84.106.199 (talk) 20:49, 19 December 2009 (UTC)[reply]