Arachidic acid (also called eicosanoic acid) is a long-chain saturated fatty acid. It is the elongation product of stearic acid and can be utilized as an energy source to build membranes.
Arachidic acid is found naturally in fish and vegetable oils (such as those from peanuts). It is structurally related to the polyunsaturated omega-6 fatty acid Arachidonic acid and can also be formed by the hydrogenation of arachidonic acid.
It’s name derives from the Latin arachis—peanut.
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