EndNote, a citation manager available to the Case Community at a great discount through the Software Center, may experience trouble when importing citations from some databases.
The Chemical Information Sources Discussion List (CHMINF-L) recently had a post from Andrea Twiss-Brooks (Bibliographer for Chemistry, Physics, & Geophysical Sciences at the University of Chicago) about some custom filters that have been created for MDL CrossFire Beilstein, Business Source Premier (EBSCO), GeoRef, and MathSciNet. The filters are freely available for anyone to download and use.