Choline

**Definition:** A basic constituent of lecithin that is found in many plants and animal organs. It is important as a precursor of acetylcholine, as a methyl donor in various metabolic processes, and in lipid metabolism.

**Tree numbers:** - D02.033.100.291.211 - D02.092.063.291.211 - D02.092.877.883.333 - D02.675.276.232

**Synonyms:** - 2-Hydroxy-N,N,N-trimethylethanaminium