e-EROS is a systematic and exhaustive coverage of reagents used in organic chemistry. From Acetaldehyde to Zirconium Tetraisopropoxide the A to Z listing covers both classical reagents and the new 'designer' reagents.

Among the types of reagents included are:

• Oxidizing Agents	• Agents Effecting Reductive Elimination
• Halogenating Agents	• Derivatizing Reagents
• Boron-Containing Agents	• Transition Metal Organometallic Reagents
• Aluminum Reagents	• Rhodium Reagents
• Organosilicon Reagents	• Titanium/Zirconium/Hafnium-Based Reagents
• Organotin Reagents	• Iron Reagents
• C1-C4 Organic Compounds	• Resolving Reagents
• Organolithium Reagents	• Enzymatic Reagents
• Solvent Additives	• Activating Reagents
• Nickel/Palladium/Platinum-Based Reagents	• Catalysts
• Agents That Undergo Cycloaddition	• Ligands, Linkers and Auxiliaries
• Derivatizing Reagents	• Protecting Groups
• Cyclopropanating Agents	• Monoprotected Bifunctional Building Blocks