Vitamin B1(Thiamine, thiamin)
Synonyms : Thiamine, or thiamin
CAS # : 67-03-8
Molecular formula: C12H17N4OS+
Molar mass: 337.27 g/mol 
Melting point: 248-260 °C (hydrochloride salt)
Characteristics and Application :
Vitamin B1 is a water-soluble vitamin.
Thiamine is a colorless compound. Its structure contains a pyrimidine ring and a thiazole ring linked by a methylene bridge. Thiamine is soluble in water, methanol, and glycerol and practically insoluble in acetone, ether, chloroform, and benzene. It is stable at acidic pH, but is unstable in alkaline solutions.Thiamine is unstable to heat, but stable during frozen storage. It is unstable when exposed to ultraviolet light and gamma irradiation.Thiamine reacts strongly in Maillard-type reactions.
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