5-(beta-hydroxyethyl)-4-methylthiazole-2-carboxylic acid (4-Methyl-5-Hydroxyethylthiazole Phosphate) is a small molecule belonging to the 4,5-disubstituted thiazole class of organic compounds. These compounds contain a substituted thiazole ring only in the 4th and 5th positions. The compound is involved in thiamine metabolism. It condenses 4-methyl-5-(beta-hydroxyethyl)thiazole monophosphate (THZ-P) and 2-methyl-4-amino-5-hydroxymethyl pyrimidine pyrophosphate (HMP-PP) to form thiamine monophosphate (TMP).
