Choline Bitartrate (Standard) is the standard substance of Choline Bitartrate, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Choline bitartrate (2-hydroxyethyl(trimethyl)azanium) is a form of the nutrient choline which is found in foods. Choline is necessary for normal liver and kidney function and a component of the neurotransmitter acetylcholine, a chemical that facilitates communication between the nerves and muscles.