<unk>  is an organic compound, classified as an essential nutrient and usually grouped within the Vitamin B complex.  This natural amine is found in the lipids that make up cell membranes and in the neurotransmitter acetylcholine. Adequate intakes (AI) for this micronutrient of between 425 to 550 milligrams daily, for adults, have been established by the Food and Nutrition Board of the Institute of Medicine of the National Academy of Sciences.
Choline
Cyanic acid
Sardine
Stearic acid
Arachidonic acid
Oleic acid
Alkane
Meconic acid