Studies on phospholipids. 6. A complex phospholipid from sheep brain

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Abstract
From sheep brain, a derivative of a complex phospholipid has been isolated with a molecular weight of 2030 and containing the following residues: 2 moles of glycerol-1-phosphate, 1 mole each of dinitrophenylethanolamine, choline, a sugar and a fatty alcohol, 2 moles of fatty acids and 2 unidentified N-containing materials. The fatty alcohol had a molecular weight of 475, with 1 hydroxyl group, and constituted 4.9-9.2% of the total phospholipids of sheep brain. One of the unidentified N-containing residues after hydrolysis was water-soluble and contained neither free amino groups nor quaternary ammonium groups. The complex phospholipid constituted 28% of the total sheep-brain phospholipids.