Book excerpt: As research progresses and information continues to proliferate in the field of molecular design for therapeutic use, there is a need for a reference that brings current theory and proven practice together in a how-to volume. This reference guides scientists new to the field on how to design small molecules that interact with critical protein targets. The chapters condense useful material into a manageable format which is carefully organized and presented. It offers an essential resource for a variety of chemists in academia, and the biotech and pharmaceutical industries, as well as professionals in complementary fields.