https://wiki.tiffa.net/w/index.php?action=history&feed=atom&title=Translations%3AOmega-3_fatty_acid%2F9%2Fen 2026-07-13T19:40:46Z Revision history for this page on the wiki MediaWiki 1.43.0 https://wiki.tiffa.net/w/index.php?title=Translations:Omega-3_fatty_acid/9/en&diff=139104&oldid=prev 2024-04-14T00:25:00Z

<p>Importing a new version from external source</p> <p><b>New page</b></p><div>==Nomenclature==<br /> {{main|Fatty acid#Nomenclature}}<br /> [[File:ALAnumbering.svg|500px|right|thumb|Chemical structure of α-linolenic acid (ALA), a fatty acid with a chain of 18 carbons with three [[double bond]]s on carbons numbered 9, 12, and 15. The omega (ω) end of the chain is at carbon 18, and the double bond closest to the omega carbon begins at carbon 15 = 18−3. Hence, ALA is a &#039;&#039;ω−&#039;&#039;3 fatty acid with &#039;&#039;ω&#039;&#039; = 18.]]<br /> The terms &#039;&#039;ω−3 (&quot;omega−3&quot;) fatty acid&#039;&#039; and &#039;&#039;n−3 fatty acid&#039;&#039; are derived from the [[Chemical nomenclature|nomenclature]] of organic chemistry. One way in which an [[unsaturated fatty acid]] is named is determined by the location, in its [[carbon]] chain, of the [[double bond]] which is closest to the [[methyl group|methyl]] end of the molecule. In general terminology, &#039;&#039;n&#039;&#039; (or ω) represents the [[locant]] of the methyl end of the molecule, while the number &#039;&#039;n−x&#039;&#039; (or ω−&#039;&#039;x&#039;&#039;) refers to the locant of its nearest [[double bond]]. Thus, in omega&#039;&#039;−&#039;&#039;3 fatty acids in particular, there is a double bond located at the carbon numbered 3, starting from the methyl end of the fatty acid chain. This classification scheme is useful since most chemical changes occur at the [[carboxyl group|carboxyl]] end of the molecule, while the methyl group and its nearest double bond are unchanged in most chemical or enzymatic reactions.</div>

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