E-F E α-Elimination β-Elimination 1,1-Elimination 1,2-Elimination E1 Mechanism E1 Reaction E1cB Mechanism E1cB Reaction E2 Mechanism E2 Reaction Eclipsed Conformation Eclipsing Strain Electron Delocalization Electron Ionization Electrophile Electrophilic Addition Electrophilic Aromatic Substitution Electrophilic Atom Electrophilic Substitution Elimination Enamine Enamine Group Enantiomeric Excess Enantiomers Enantioselective Enantiotopic Endocyclic Enol Enolate Ion Enol Form Enolizable Aldehyde Enolizable Ester Enolizable Ketone Epimeric Carbon Epimerization Epimers Epoxide Epoxy Ring Equatorial Bond Equivalent Ligands Erythro Essential Amino Acid Essential Fatty Acid Essential Oil Ester Ester Bond Ester Enolate Esterification Ester Linkage Ether Ether Group Excited-State Atom Exocyclic E,Z Convention F Fat Fatty Acid Fingerprint Region Fischer Esterification Fischer Projection Fischer Projection Formula Fish Hook Flagpole Bond Flagpole Hydrogen Fluorohydrin Formal Charge Fragment Fragmentation Free Radical Free Rotation Freon Friedel-Crafts Acylation Friedel-Crafts Alkylation Fries Rearrangement Functional Group Functional Isomers Furanose Furanose Ring Furanoside Fused Bicycloalkane