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arachidonic acid
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Arachidonic acid (AA, sometimes ARA) is a polyunsaturated omega-6 fatty acid 20:4(ω-6). It is structurally related to the saturated arachidic acid found in peanut oil (''L. arachis'' – peanut).
==Chemistry==
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In chemical structure, arachidonic acid is a carboxylic acid with a 20-carbon chain and four ''cis''-double bonds; the first double bond is located at the sixth carbon from the omega end.
Some chemistry sources define 'arachidonic acid' to designate any of the eicosatetraenoic acids. However, almost all writings in biology, medicine and nutrition limit the term to all-''cis''-5,8,11,14-eicosatetraenoic acid.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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