choline vitamin-like essential nutrien molecule. it is a constituent of lecithin. structural chemical formula on the dark blue

acetylcholine alanine ammonium atom atomic bilineurin blue carbon cation chemistry cholin choline cholinum compound dark deficiency diet essential flat formula hydrogen icon illustration ion lecithin liver model molecular molecule neural neurine neurotransmitter nitrogen nutrient nutritional organic precursor pregnancy quaternary science sphingomyelin structure transaminase vector vitamin vitamine white