Synonyms: 3-[(4-Amino-2-methyl-5-pyrimidinyl)methyl]-4-methyl-5-[2-(phosphonooxy)ethyl]-thiazolium Chloride Hydrate (1:1:2), Thiazolium, 3-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-4-methyl-5-[2-(phosphonooxy)ethyl]-, chloride, dihydrate (9CI), Thiamine Monophosphate Dihydrate