12318-71-7 136-09-4 2-(3-((4-Amino-2-methylpyrimidin-5-yl)methyl)-4-methyl-1,3-thiazoniol-5-yl)ethyl dihydrogen diphosphate 495-24-9 EINECS 205-230-7 Thiamin pyrophosphate Thiamine pyrophosphate Thiazolium, 3-((4-amino-2-methyl-5-pyrimidinyl)methyl)-4-methyl-5-(4,6,6-trihydroxy-3,5-dioxa-4,6-diphosphahex-1-yl)-, hydroxide, inner salt, P,P'-dioxide Thiazolium, 3-((4-amino-2-methyl-5-pyrimidinyl)methyl)-4-methyl-5-(4,6,6-trihydroxy-4,6-dioxido-3,5-dioxa-4,6-diphosphahex-1-yl)-, inner salt