[{"Bold_text": "noun", "List Items": ["a white, crystalline, water-soluble compound of the vitamin-B complex, containing a thiazole and a pyrimidine group, C12H17Cl N4OS, essential for normal functioning of the nervous system, a deficiency of which results chiefly in beriberi and other nerve disorders: occurring in many natural sources, as green peas, liver, and especially the seed coats of cereal grains, the commercial product of which is chiefly synthesized in the form of its chloride saltthiamine hydrochloridefor therapeutic administration, or in nitrate formthiamine mononitratefor enriching flour mixes."]}]