The branched-chain fatty acids of butterfat. 6. Further investigations on the C15 saturated acids

Abstract
Two C15 branched-chain acids, (+)-12-methyltetradecanoic acid and 13-methyltetradecanoic acid, together with the straight-chain odd-numbered acid n-pentadecanoic acid, were isolated from butterfat by methods which did not involve hydrogenation. Expressed as a percentage of the total fatty acids, the amounts of (+)-12-methyltetradecanoic acid, 13-methyltetradecanoic acid and n-pentadecanoic acid were 0.43, 037 and 0.82%, respectively.