Pronunce (4)
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/ˈɛstɚ/
Note sulla pronuncia
- General-American
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/ˈɛstə/
Note sulla pronuncia
- Received-Pronunciation
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ˈɛstɚ
Note sulla pronuncia
- US
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ˈɛstə
Note sulla pronuncia
- GB
Sostantivo
A compound most often formed by the condensation of an alcohol and an acid, with elimination of water, which contains the functional group carbon-oxygen double bond (i.e., carbonyl) joined via carbon to another oxygen atom.
- Esempi
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Altri esempi (3)
To produce a test material containing at least 75 percent omega-3 polyunsaturates, the menhaden triglycerides are transesterified to produce fatty acid ethyl esters. The esters are reacted with urea dissolved in hot ethanol and the solution is cooled overnight.
The thiol-coenzyme-A ester formed by R-arylpropionic acid can bind to triglyceride to form a “hybrid” triglyceride: such hybrid triglycerides can cause alteration of fatty-acid metabolism and membrane function, and a lipophilic triglyceride–propionic-acid hybrid would be able to cross lipid membranes such as the blood–brain barrier.
The effort’s primary material systems are vinyl esters and polyurethanes, reinforced with inexpensive chopped-glass rovings. Automated glass-fiber preforming processes and high-rate molding procedures are being studied in an effort to reduce cycle times and production costs substantially.
Sostantivo
organic compound formed by reaction between an acid and an alcohol with elimination of water
- Termini più generali