While some of the most commonly investigated and most notorious chemicals in the world are alkaloids, many modern medicines are also based on alkaloid structures. Chemists continue to explore new synthetic routes and alkaloid derivatives in search of drug candidates for fighting disease. This comprehensive dictionary documents and categorizes all known alkaloids. Drawn from the authoritative Dictionary of Natural Products, it presents concise chemical, structural, and physical data on more than 20, 000 alkaloids. Each entry also includes biological sources and activity, chemical structure, physical properties, and literature references. A fully searchable CD-ROM version of the database also accompanies this volume.