Phosphoric diesters, esters of phosphatidic acids, generally having a polar head group (OH
) on the esterified alcohol which typically is 2-aminoethanol, choline, glycerol, inositol, serine. The term includes lecithins, cephalins. E.g.
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1358 (https://doi.org/10.1351/pac199567081307)