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Structures of iso- and anteiso-branched chain fatty acids (BCFA). n-(normal) hydrocarbon chains without branching. iso-BCFA have a bifurcated methyl branch (iso-15:0 is 13-methyl tetradecanoic acid). anteiso-BCFA have a methyl branch on the antepenultimate carbon. anteiso-15:0 is 12-methyl tetradecanoic acid
