Many of the pictures of molecules at this world wide web site are hyperactive molecules (i.e. they contain information concerning the molecular structure of the molecules, which can be downlaoded and viewed on your own computer).
The X-ray crystallographic database
for protein structure determinations. Where you can search for: chemical structure, fragment, formula, etc.
Then you can retrieve molecular information which can be imported straight into your chemistry viewing program. Go to the Online link to the Protein Data Bank
