A neat search engine string allows you to pull in the abstracts from a large section of the scientific literature based on a full text search. It’s analogous to checking only the “journals” box when using Elsevier’s Scirus.com but allows you to search across publications offered by American Physical Society, Cambridge University Press, Institute of Organic Chemistry and Biochemistry, Karger, Nature Publishing Group, Wiley, and many others.
You can give it a try on the full-text literature search page at ChemSpy.com
I’ll also be adding it to the Sciencebase search toolbox when I update those to take account of the imminent Intute launch.