CAS 67-03-8 Molecular formula C12H18Cl2N4OS Molecular weight 337.27 Categories Biochemistry; Vitamins; Vitamins and derivatives; Vitamin Ingredients; Quality standard EP standard Package 25 kilogram cardboard drum Stability Stable. Combustible. Incompatible with strong oxidizing agents, strong reducing agents. Chemical Properties White crystalline powder Usage Essential nutrient required for carbohydrate metabolism; also involved in nerve function. Biosynthesized by microorganisms and plants. Dietary sources include whole grains, meat products, vegetables, milk, legumes and fruit.