citramalicadj.

Brit.

/sɪtrəˈmalɪk/,

/sɪtrəˈmeɪlɪk/, U.S.

/ˌsɪtrəˈmælɪk/

Forms: 1800s– citramalic, 1800s– citromalic.

Origin: A borrowing from French. Etymon: French citramalique.

Etymology: < French citramalique (in acide citramalique : 1864 in Ann. de chim. et de phys. (4th ser.) 1 490; < citra- + malique malic adj., after German Citramalsäure (L. Carius 1864, in Ann. der Chem. u. Pharm. 129 160; < Citra- (in Citraconsäure citraconic acid: see citraconic adj.) + Malsäure malic acid), with remodelling of the ending in English (see -ic suffix). Compare citratartaric adj. In form citromalic showing alteration after words in citro- comb. form.

Chemistry.

citramalic acid n. a crystalline dibasic carboxylic acid, the 2-methyl derivative of malic acid.Systematic name: 2-hydroxy-2-methylbutanedioic acid; C₅H₈O₅.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic acids > [noun] > dicarboxylic acids > miscellaneous others

suberic acid1796

oxalovinic acid1838

citraconic acid1840

melanic acid1840

citramalic acid1864

citratartaric acid1864

isophthalic acid1870

methylmalonic acid1889

norpinic acid1909

naphthalic acid1920

1864 Philos. Mag. 25 Suppl. 541 The chlorine of the acid becomes replaced by hydrogen, forming a new acid, citramalic acid, homologous with malic acid.

1892 Jrnl. Chem. Soc. 62 964 A comparison of the properties of citromalic aid and α-methyl-malic acid shows that these compounds are identical.

1965 Science 17 Dec. 1557/3 The means differ by which α-hydroxyglutaric and β-ethylmalic acids are metabolized to citramalic and α-ethylmalic acids, respectively.

1996 D. Arthey & P. R. Ashurst Fruit Processing v. 118 Apple juice is a mixture of sugars..and polysac[c]harides (e.g. starch) together with malic, quinic and citromalic acids.

2005 Plant Physiol. 139 2001/1 Malic, citramalic, and fumaric acids each were depleted to less than 10% of their control levels.

Derivatives

citraˈmalate n. [ < French citramalate (1864 in Ann. de chim. et de physique (4th ser.) 1 49́1] a salt or ester, or the anion, of citramalic acid.

ΚΠ

1876 Jrnl. Chem. Soc. 29 563 Acid sodium monochloro-citramalate.

1879 Jrnl. Chem. Soc. 36 707 Ammonium citramalate forms minute needles.

1965 Plant Physiol. 40 1070/2 Reductive synthesis of pyruvate from acetyl-coenzyme A, citramalate isomerase, hydroxyglutaric dehydrogenase and glutamic dehydrogenase.

2000 S. A. Rogers No more Heartburn 192 Elevated urinary metabolites..like citromalate, B-ketoglutarate, tartrate, and arabinose suggest there is overgrowth of yeasts.

This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	citramalic
释义	citramalicadj. Brit. /sɪtrəˈmalɪk/, /sɪtrəˈmeɪlɪk/, U.S. /ˌsɪtrəˈmælɪk/ Forms: 1800s– citramalic, 1800s– citromalic. Origin: A borrowing from French. Etymon: French citramalique. Etymology: < French citramalique (in acide citramalique : 1864 in Ann. de chim. et de phys. (4th ser.) 1 490; < citra- + malique malic adj., after German Citramalsäure (L. Carius 1864, in Ann. der Chem. u. Pharm. 129 160; < Citra- (in Citraconsäure citraconic acid: see citraconic adj.) + Malsäure malic acid), with remodelling of the ending in English (see -ic suffix). Compare citratartaric adj. In form citromalic showing alteration after words in citro- comb. form. Chemistry. citramalic acid n. a crystalline dibasic carboxylic acid, the 2-methyl derivative of malic acid.Systematic name: 2-hydroxy-2-methylbutanedioic acid; C₅H₈O₅. ΘΚΠ the world > matter > chemistry > organic chemistry > organic acids > [noun] > dicarboxylic acids > miscellaneous others suberic acid1796 oxalovinic acid1838 citraconic acid1840 melanic acid1840 citramalic acid1864 citratartaric acid1864 isophthalic acid1870 methylmalonic acid1889 norpinic acid1909 naphthalic acid1920 1864 Philos. Mag. 25 Suppl. 541 The chlorine of the acid becomes replaced by hydrogen, forming a new acid, citramalic acid, homologous with malic acid. 1892 Jrnl. Chem. Soc. 62 964 A comparison of the properties of citromalic aid and α-methyl-malic acid shows that these compounds are identical. 1965 Science 17 Dec. 1557/3 The means differ by which α-hydroxyglutaric and β-ethylmalic acids are metabolized to citramalic and α-ethylmalic acids, respectively. 1996 D. Arthey & P. R. Ashurst Fruit Processing v. 118 Apple juice is a mixture of sugars..and polysac[c]harides (e.g. starch) together with malic, quinic and citromalic acids. 2005 Plant Physiol. 139 2001/1 Malic, citramalic, and fumaric acids each were depleted to less than 10% of their control levels. Derivatives citraˈmalate n. [ < French citramalate (1864 in Ann. de chim. et de physique (4th ser.) 1 49́1] a salt or ester, or the anion, of citramalic acid. ΚΠ 1876 Jrnl. Chem. Soc. 29 563 Acid sodium monochloro-citramalate. 1879 Jrnl. Chem. Soc. 36 707 Ammonium citramalate forms minute needles. 1965 Plant Physiol. 40 1070/2 Reductive synthesis of pyruvate from acetyl-coenzyme A, citramalate isomerase, hydroxyglutaric dehydrogenase and glutamic dehydrogenase. 2000 S. A. Rogers No more Heartburn 192 Elevated urinary metabolites..like citromalate, B-ketoglutarate, tartrate, and arabinose suggest there is overgrowth of yeasts. This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022). < adj.1864
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