from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A ring-shaped organic compound consisting of an oxygen atom bonded to two other atoms, usually of carbon, that are already bonded to each other.
- n. A compound containing such a structure.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a class of organic compound, cyclic ethers, having a three-membered ring; they are prepared by the selective oxidation of alkenes or by ring-closure of halohydrins; used to make plastics.
Sorry, no etymologies found.
Michele: No. Um, well, ordinarily when you make glue first you need to thermoset your resin and then after it cools you have to mix in an epoxide, which is really just a fancy-schmancy name for any simple oxygenated adhesive, right?
But, the scientist made a BPA-free polycarbonate plastic by using chemicals called imidazoliums and N-heterocyclic carbenes to couple CO2 with "epoxide" molecules to create polycarbonate plastics.
CBZ follows first-order, nonsaturable kinetics. 1,2 CBZ is metabolized in the liver to several metabolites, the primary metabolite being CBZ-10,11 epoxide (CBZ-E) .1,2 CBZ-E possesses anticonvulsant activity similar to the parent drug.
My body also carries organochlorine pesticides, some with names you may recognize (DDT, Chlordane, Mirex) alongside others that are less familiar (including Hexachlorobenzene, beta-hexachlorocyclohexane, Oxychlordane, t-Nonachlor, Heptachlor epoxide).
An example is the biotransformation of vinyl chloride to vinyl chloride epoxide, which covalently binds to DNA and RNA, a step leading to cancer of the liver.
The allylic alcohol is oxidised to the epoxide (R) - glycidol using the oxidising agent tertiary butylhydroperoxide in the presence of a catalyst.
The synthesis of the epoxide (R) - glycidol is shown in figure 7.
On the other hand, BP and its epoxide can be bound by the nutrient glutathione and thus rendered harmless.
Thus they make larger amounts of the epoxide in their bodies in a shorter time, thus producing a greater concentration of the BP epoxide.
It is the chemical that gets into the body via smoke but then is converted by enzymes called aryl hydrocarbon hydroxylases into a more potent chemical that is the epoxide of BP.
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