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%ما هو (من)٪ 1 - تعريف
CLASS OF ORGANIC COMPOUNDS HAVING STRUCTURE RCOR´
Alkanone; Ketones; Synthesis and degradation of ketone bodies; Oxy group; Keton; RCOR; Haller-Bauer reaction; Keto group; Ketone group; Keytones; Cyclic ketone; Cyclic ketones; Haller–Bauer reaction; Methyl ketone; Keto-
![metabolism of sugars]]; [[acetylacetone]] in its (mono) enol form (the enol highlighted in blue); [[cyclohexanone]], precursor to [[nylon]]; [[muscone]], an animal scent; and [[tetracycline]], an antibiotic.](https://commons.wikimedia.org/wiki/Special:FilePath/KetoneVarietyPack.png?width=200 "metabolism of sugars]]; [[acetylacetone]] in its (mono) enol form (the enol highlighted in blue); [[cyclohexanone]], precursor to [[nylon]]; [[muscone]], an animal scent; and [[tetracycline]], an antibiotic.")
ketone
['ki:t??n]
¦ noun Chemistry an organic compound containing a carbonyl group =C=O bonded to two alkyl groups, e.g. acetone.
Derivatives
ketonic k?'t?n?k adjective
Origin
C19: from Ger. Keton, alt. of Aketon 'acetone'.
Ketone
·noun One of a large class of organic substances resembling the aldehydes, obtained by the distillation of certain salts of organic acids and consisting of carbonyl (CO) united with two hydrocarbon radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor.
Ketone
In organic chemistry, a ketone is a functional group with the structure , where R can be a variety of carbon-containing substituents. Ketones contain a carbonyl group (a carbon-oxygen double bond).
ويكيبيديا
Ketone
In organic chemistry, a ketone is a functional group with the structure R−C(=O)−R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group −C(=O)− (which contains a carbon-oxygen double bond C=O). The simplest ketone is acetone (where R and R' is methyl), with the formula (CH3)2CO. Many ketones are of great importance in biology and in industry. Examples include many sugars (ketoses), many steroids (e.g., testosterone), and the solvent acetone.
أمثلة من مجموعة نصية لـ٪ 1
1. This produces the ketone bodies that make an insulin reaction so deadly to diabetics.
2. It was huge." The chemicals released when 12 of the train cars derailed were cyclohexane, methyl ethyl ketone, butadiene and alcohol, said Gary Sease, a CSX spokesman.
3. The chemicals spilled when the 12 train cars derailed Tuesday were cyclohexane, methyl ethyl ketone, butadiene and alcohol, said Gary Sease, a CSX Corp. spokesman.
4. Just these few yummy chemicals: amyl acetate, amyl butyrate, amyl valerate, anethol, anisyl formate, benzyl acetate, benzyl isobutyrate, butyric acid, cinnamyl isobutyrate, cinnamyl valerate, cognac essential oil, diacetyl, dipropyl ketone, ethyl butyrate, ethyl cinnamate, ethyl heptanoate, ethyl heptylate, ethyl lactate, ethyl methylphenylglycidate, ethyl nitrate, ethyl propionate, ethyl valerate, heliotropin, hydroxyphrenyl– 2–butanone (10% solution in alcohol), ionone, isobutyl anthranilate, isobutyl butyrate, lemon essential oil, maltol, 4–methylacetophenone, methyl anthranilate, methyl benzoate, methyl cinnamate, methyl heptine carbonate, methyl naphthyl ketone, methyl salicylate, mint essential oil, neroli essential oil, nerolin, neryl isobutyrate, orris butter, phenethyl alcohol, rose, rum ether, undecalactone, vanillin and solvent.
5. The chemicals on the CSX train contributing to the fire were cyclohexane, methyl ethyl ketone, butadiene and alcohol, said Gary Sease, a CSX spokesman. These substances themselves are pretty toxic, but when they burn they break down a whole lot,‘‘ said Jeremey Urekew, a spokesman for Bullitt County Emergency Management. This fire is going to burn itself out.‘‘ Two other cars were carrying hazardous materials that could pose an environmental threat, but they were not near the fire, he said.