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The chemical structure of linoleic acid (LA, 18:2n-6 or 18:2Δ9,12) and its two alternative systematic nomenclature. LA contains 2 double bonds, or desaturations, at the Δ9 and Δ12 carbon positions from the carboxyl (Δ terminus) or at the n-6 and n-9 carbon positions counted from the methyl (-n) end [27].
