| 41. | 2-Furonitrile has also been prepared from other furan derivatives, including furfural aldoxime and furoic acid amide.
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| 42. | It has even spawned a Spanish adjective, furero, to describe its special lenguaje furero, its Furan language.
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| 43. | About 1 percent are carbon monoxide, nitrogen and sulfur dioxides and traces of carcinogenic furans and polynuclear aromatic hydrocarbons.
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| 44. | Decisions about two other families of chemicals, industrial byproducts known as dioxins and furans, are still being weighed.
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| 45. | The Hantzsch pyridine synthesis, the Gewald reaction and the Feist Benary furan synthesis all contain a Knoevenagel reaction step.
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| 46. | The " Ruisseau d'Armaille " flows from west to east across the commune into the Furans.
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| 47. | Dioxins and furans are two of them and intentionally created by combustion of organics, like open burning of plastics.
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| 48. | Glycerol and acetic acid are examples of retained semisystematic names; furan and anisole are examples of retained trivial names.
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| 49. | Examples of these chemicals include : polychlorinated dibenzodioxins, furans, biphenyls, DDT and its metabolites, and dieldrin.
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| 50. | In organic synthesis, it is used as a precursor for other substituted and ring-fused furans and butenolides.
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