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Counterion

A charged ion that is paired with an opposite charged ion in a chemical compound.

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Synthesis Elemental analysis Asymmetric synthesis Enantiomer Regioselectivity Diastereoselectivity Green chemistry Residue Oligomer Solid-phase synthesis Lewis acid Column chromatography Characterization Melting point Crystallization Yield NMR spectroscopy Distillation Catalyst Cleavage Thin-layer chromatography (TLC) Selectivity Ligand Nucleophile Electrophile Molecular docking Solvent Stereochemistry Lead compound Infrared (IR) spectroscopy Enantioselectivity Deprotonation Chromatography Recrystallization Optimization Boiling point Protonation Mass spectrometry (MS) IC50 Differential scanning calorimetry (DSC) Atom economy Solubility Pharmacophore Potency Reagent Cyclization Scaffold Polymer Conformation binding affinity