Phosphoric diesters, @E02219@ of @P04550@, generally having a polar head group (OH or NH2) on the esterified alcohol which typically is 2-aminoethanol, choline, glycerol, inositol, serine. The term includes @L03494@, @C00938@. 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 [Terms] [Paper]