Phosphocholine is a molecule made up of a phosphate group, choline and a hydroxyl group. It is an essential component of lipids in cell membranes and has a significant role in maintaining cellular functions. There are several terms used as synonyms for phosphocholine, including 2-hydroxy-N,N,N-trimethylethanaminium, alpha-hydroxyethyl-trimethylammonium, and choline phosphate. Additionally, phosphocholine is often referred to as a phospholipid, as it is a structural component of the outer membrane of cells. Precursors to phosphocholine include choline, betaine, and ethanolamine, which contribute to the biosynthesis of the molecule. Ultimately, phosphocholine plays a vital role in the maintenance of cell membrane stability and signaling.