Soluble in alcohol Slightly soluble in ether, petroleum ether Miscible in propylene glycol Insoluble in vegetable oil
log P
-0.36
Acidity (pKa)
13.72
Chiral rotation ([α]D)
-39.4
Refractive index (nD)
1.4171
Hazards
Flash point
41 °C (106 °F; 314 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
> 5000 mg/kg (rat, oral)
Safety data sheet (SDS)
MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Acetoin, also known as 3-hydroxybutanone or acetyl methyl carbinol, is an organic compound with the formula CH3CH(OH)C(O)CH3. It is a colorless liquid with a pleasant, buttery odor. It is chiral. The form produced by bacteria is (R)-acetoin.[1]
^Albert Gossauer: Struktur und Reaktivität der Biomoleküle, Verlag Helvetica Chimica Acta, Zürich, 2006, Seite 285, ISBN 978-3-906390-29-1.
Acetoin, also known as 3-hydroxybutanone or acetyl methyl carbinol, is an organic compound with the formula CH3CH(OH)C(O)CH3. It is a colorless liquid...
Acetoin dehydrogenase (EC 2.3.1.190, acetoin dehydrogenase complex, acetoin dehydrogenase enzyme system, AoDH ES) is an enzyme with systematic name acetyl-CoA:acetoin...
an acetoin racemase (EC 5.1.2.4) is an enzyme that catalyzes the chemical reaction (S)-acetoin ⇌ {\displaystyle \rightleftharpoons } (R)-acetoin This...
industrially by dehydrogenation of 2,3-butanediol. Acetoin is an intermediate. Diacetyl and acetoin are two compounds that give butter its characteristic...
reductase is the name of two acetoin forming enzymes: Diacetyl reductase ((R)-acetoin forming) Diacetyl reductase ((S)-acetoin forming) This set index page...
The molecular formula C4H8O2 may refer to: Acetoin cis-Butene-1,4-diol Butyric acid Dioxanes 1,2-Dioxane 1,3-Dioxane 1,4-Dioxane Ethyl acetate 3-Hydroxybutanal...
\rightleftharpoons } (R)-2-acetoin + CO2 Hence, this enzyme has one substrate, (S)-2-hydroxy-2-methyl-3-oxobutanoate, and two products, (R)-2-acetoin and CO2. This...
glycerol, maltose, sucrose, and trehalose. It also tests positive for acetoin production, arginine, dihydrolase, benzidine, catalase, hemolysis, and...
contribute to the flavor of kefir are pyruvic acid, acetic acid, diacetyl and acetoin (both of which contribute a "buttery" flavor), citric acid, acetaldehyde...
products of malolactic fermentation are lactic acid, diacetyl, acetic acid, acetoin, and various esters. The amount and exact nature of these products depends...
propionicus is a species of bacteria that ferments 2,3-butanediol and acetoin. It is Gram-negative, strictly anaerobic and non-spore-forming. Ott Bd...
taste and smell of butter. It may contain diacetyl, acetylpropionyl, or acetoin, three natural compounds in butter that contribute to its characteristic...
expression. Together with the acetylpolyamine amidohydrolases and the acetoin utilization proteins, the histone deacetylases form an ancient protein...
galacturonate and D-maltose. Cronobacter spp. are also generally positive for acetoin production (Voges–Proskauer test) and negative for the methyl red test...
U V W X Y Z See also References External links Acetanisole Acetic acid Acetoin Acetophenone 6-Acetoxydihydrotheaspirane 2-Acetyl-3-ethylpyrazine 2-Acetyl-5-methylfuran...
potassium hydroxide to test for the presence of acetylmethylcarbinol (acetoin), an intermediate of the 2,3-butanediol fermentation pathway. After adding...
sequence analysis. The majority of Streptococcus anginosus strains produce acetoin from glucose, ferment lactose, trehalose, salicin, and sucrose, and hydrolyze...
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