In chemistry, a zwitterion (/ˈtsvɪtəˌraɪən/ TSVIT-ə-ry-ən; from German Zwitter [ˈtsvɪtɐ] 'hermaphrodite'), also called an inner salt or dipolar ion, is...
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A quinonoid zwitterion is a mesoionic zwitterion based on quinone-related chemical compounds. The benzene derivate 1,3-dihydroxy-4,6-diaminobenzene is...
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Criegee intermediate (redirect from Criegee zwitterion)
A Criegee intermediate (also called a Criegee zwitterion or Criegee biradical) is a carbonyl oxide with two charge centers. These chemicals may react with...
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Salt (chemistry) (section Zwitterion)
acid CH3COOH. Zwitterions contain an anionic and a cationic centre in the same molecule, but are not considered salts. Examples of zwitterions are amino acids...
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carboxylic acid is mostly deprotonated, so that the predominant species is the zwitterion H3N+−RCH−COO−. The pH at which the average charge is zero is known as...
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acidic water solutions, the molecule assumes an electrically neutral zwitterion structure −OOC−CH(NH+ 3)−(CH 2)2−COOH. It is encoded by the codons GAA...
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compound with the formula H3NC6H4SO3. It is an off-white solid. It is a zwitterion, which explains its high melting point. It is a common building block...
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923-27-3 D Y 3D model (JSmol) Interactive image Zwitterion: Interactive image Protonated zwitterion: Interactive image ChEBI CHEBI:25094 Y ChEMBL ChEMBL28328 Y...
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is the German word for "hybrid" or "hermaphrodite". It may refer to: A zwitterion, in chemistry An intersex person, in Karl Heinrich Ulrichs' Uranian typology...
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Amino acid (category Zwitterions)
In aqueous solution at pH close to neutrality, amino acids exist as zwitterions, i.e. as dipolar ions with both NH+3 and CO−2 in charged states, so the...
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structure. Contributing structures containing charged atoms are denoted as zwitterions. Some dipolar compounds can have an uncharged canonical form. 1,2-dipolar...
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carrier family, subfamily 22. This family of proteins can also transport zwitterions and anions, though it is a different subfamily of solute carrier proteins...
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acid with the formula (CH2SCH2NHCH)CO2H, although it crystallizes as the zwitterion (CH2SCH2NH+2CH)CO−2. It consists of a 1,3-thiazolidine ring ( (CH2SCH2NHCH2))...
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it adopts an amide-like configuration. It is also commonly shown as a zwitterion. Muscimol can be extracted from the flesh of the Amanita muscaria by treatment...
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corresponding carbonyl oxide (also called the Criegee intermediate or Criegee zwitterion) and aldehyde or ketone (3) in a retro-1,3-dipolar cycloaddition. The...
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formula NH2‐CH2‐COOH. In solution or in the solid, glycine exists as the zwitterion. Glycine is one of the proteinogenic amino acids. It is encoded by all...
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100% of the analytical glycine concentration. Glycine may exist as a zwitterion at the isoelectric point, but the equilibrium constant for the isomerization...
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change one gram of a liquid substance to a gas at constant temperature Zwitterion – a molecule composed of individual functional groups which are ions,...
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3-hydroxypyridine 4-Pyridone These can adopt three tautomers, a oxo form, a zwitterion form, and a enol form. Whereas 2-pyridone (α) and 4-pyridone (γ) predominantly...
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structures given below are standard chemical structures, not the typical zwitterion forms that exist in aqueous solutions. L-Alanine (Ala / A) L-Arginine...
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Betaine (category Zwitterions)
nineteenth century. It is a small N-trimethylated amino acid. It is a zwitterion, which cannot isomerize because there is no labile hydrogen atom attached...
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is encoded by the codon UGG. Like other amino acids, tryptophan is a zwitterion at physiological pH where the amino group is protonated (–NH+ 3; pKa =...
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acid with the formula CH3N(H)CH2CO2H. It exists at neutral pH as the zwitterion CH3N+(H)2CH2CO2−, which can be obtained as a white, water-soluble powder...
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known as a dianion and an ion with a +2 charge is known as a dication. A zwitterion is a neutral molecule with positive and negative charges at different...
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written X+–Y−. Ylides are thus 1,2-dipolar compounds, and a subclass of zwitterions. They appear in organic chemistry as reagents or reactive intermediates...
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Trigonelline (category Zwitterions)
Trigonelline is an alkaloid with chemical formula C7H7NO2. It is a zwitterion formed by the methylation of the nitrogen atom of niacin (vitamin B3). Trigonelline...
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proteins. This shifts the proton more than two atoms away, producing a zwitterion rather than shifting a double bond: H2N−CH2−COOH ⇌ H3N+−CH2−CO−2 phosphite...
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with neural tube defects. Homocysteine exists at neutral pH values as a zwitterion. Homocysteine is biosynthesized naturally via a multi-step process. First...
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L: Interactive image D: Interactive image L HCl: Interactive image L Zwitterion: Interactive image 3DMet L: B01331 Beilstein Reference 1725411, 1725412...
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UV-absorption maxima of a salt, usually pyridinium iodide or the pyridinium zwitterion. Donor number and donor acceptor scale measures polarity in terms of how...
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