CADD Group Chemoinformatics Tools and User ServicesThe CADD Group's Chemoinformatics Tools and User Services is the public web server of the Computer-Aided Drug Design (CADD) Group of the Chemical Biology Laboratory (CBL), NCI, NIH located at NCI-Frederick. The purpose of this service is to provide structures, data, tools, programs and other useful information to the public. No access restrictions are placed, and the general public is invited to use this site; however, the information is NOT GEARED toward the general public, and will probably be most useful for researchers working with, or interested in, chemical information, in particular for research groups engaged in computer-aided drug design.