Q-R Q Quaternary Ammonium Ion Quaternary Ammonium Salt Quaternary Carbon R Racemate Racemic Mixture Racemization Radical Radical Anion Radical Cation Radical Chain Reaction Radical Initiator Rearrangement Redox Reaction Reducing Agent Reducing Sugar Reduction Reductive Amination Regioselective Regioselectivity Regiospecific Relative Configuration Relative Yield Replacement Test Resolution Resolving Agent Resonance Resonance Contributor Resonance Energy Resonance Form Resonance Hybrid Resonance Structure Resonance Theory Retention of Configuration Retro-Aldol Reaction Retro Diels-Alder Reaction Retrosynthetic Analysis Ring Current Ring Strain Robinson Annelation Robinson Annulation R,S Convention Ruff Degradation
