Illustrated Glossary of Organic Chemistry

Choline: A molecule with the structure shown below. A component of numerous biologically-important molecules such as acetylcholine (a neurotransmitter) and phosphatidyl choline (a phospholipid).

Molecular structure of choline.




Acetylcholine (a neurotransmitter)
  
Phosphatidyl choline (a phospholipid)
Some important biological molecules containing choline. The choline portion is shown in red.