Chemical & Engineering News
April 27, 1998
Copyright © 1998 by the American Chemical Society

The arthritis drug 
methotrexate
The arthritis drug methotrexate (pink) binds at a protein receptor site. A search of a combinatorial library using pharmacophores in Chemical Design's Chem-X found 225 additional compounds, including the molecule shown (yellow) that would be expected to bind at the same receptor site.


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