42207-96-5 MB 3 MB-3 N-((4-Amino-2-methyl-5-pyrimidinyl)methyl)-N-(4-hydroxy-1-methyl-2-((3-(4-methylphenyl)-3-oxopropyl)thio)-1-butenyl)formamide, monohydrochloride S-(beta-p-Methylpropiophenone)thiamine