Choline - trimethylaminein [(CH3)3 NC2H4OH]; colorless hygroscopic crystals, soluble in water and alcohol, and insoluble in ether. First isolated from the bile, and is part of lecithins (see) and other phosphatides (see), the source of formation of acetylcholine (see).
Choline is among the most powerful lipotropic substances, preventing fatty infiltration of the liver. At insufficiency of choline in the body there is a fatty degeneration of the liver and bleeding in the kidney.
Derivative of choline possess high biological activity, are the regulators of metabolism in the body.

Choline - hydroxide trimethyl-b-acetylamino formula [CH2OHCH2N(CH3)3]OH.
Crystals of choline gigroskopichen, soluble in water, the solution is a strong alkali reaction. Choline is part of lecithin (phosphatidylcholine) and following an intensive exchange of phosphatides (see) is spent in the body.
The synthesis of choline is methylation ethanolamine (see) at the expense of methyl groups methionine. When lack of food or choline and methionine there is a fatty liver, and young animals, in addition, kidney failure and haemorrhage. Therefore, choline considered as a vitamin, is able to regulate the processes of assimilation of fat substances.
Choline is part of acetylcholine (see). Last is formed in the body by acetylation of the enzyme choline cholineacetylase. Choline biologically active: it is capable to lower blood pressure, followed a slight increase, to cause weak reduction of smooth muscles of the uterus.
Boiling choline with barite water or under the influence of putrefactive bacteria from molecules choline cleaved water, which leads to the formation of toxic substances - Narina:
[CH2of ANSN2N(CH3)3]HE > * water CH2=SN-N(CH3)3]OH+H2o
Naryn highly poisonous. Chemical properties similar to choline.