Many databases permit downloading of records into EndNote or another citation manager. The Libraries does a training program for campus users. These instructional materials are provided by the Purdue University Libraries the desktop of EndNote and EndNote Web.
Presents an education program for the desktop version.\
What is the Best Database for Chemicals and Polymers?
Scifinder Scholar (Chemical Abstracts) is the best. You need to set up a free account. Please ask for assistance. It takes a little time to learn its special features.