What is Arachidonic Acid (ARA)? Earth - CPHI-B2B-Online
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What is Arachidonic Acid (ARA)?

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Published date: March 26, 2022
Modified date: May 13, 2026
  • Location: Hedong, Earth, Earth, Earth
What is Arachidonic Acid (ARA)?



Arachidonic acid (AA, sometimes ARA) is a polyunsaturated omega-6 fatty acid 20:4(ω-6).



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.



Arachidonic acid is a polyunsaturated fatty acid present in the phospholipids (especially phosphatidylethanolamine, phosphatidylcholine, and phosphatidylinositides) of membranes of the body's cells, and is abundant in the brain, muscles, and liver. Skeletal muscle is an especially active site of arachidonic acid retention, accounting for roughly 10-20% of the phospholipid fatty acid content on average.

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