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zwitterion

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zwitterion

Ion that has both a positive and a negative charge, such as an amino acid in neutral solution. For example, glycine contains both a basic amino group (NH2) and an acidic carboxyl group (COOH); when these are both ionized in aqueous solution, the acid group loses a proton while the amino group gains one, and the molecule is positively charged at one end and negatively charged at the other.
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Ion-pairing with acidic dyes under the described conditions is less likely because the carboxy metabolite is a zwitterion.
Determination of oseltamivir quality by colorimetric and liquid ... by Green, Michael D.; Nettey, Henry; Wirtz, Robert A. / Emerging Infectious Diseases
The nonstereospecificity and methanol adducts observed during the reaction of MTAD with the Z,Z isomer suggest the involvement of an open zwitterion.
Chemistry paper abstracts by Journal of the Alabama Academy of Science
The Zwitterion is stabilized via resonance through both the MA component and the ITX component.
Kinetic elucidation of a novel photoproduct via irradiation of ... by Mullings, Matthew E.; Walker, Corry D.; MeDonough, Adam; Cavitt, T. Brain / JCT Research
 
 
 
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