for the following products
5-Methyl-2-(methylthio)[1,2,4]triazolo[1,5-a]pyrimidin-7-ol | 7-Hydroxy-5-methyl-2-methylthio-s-triazolo[1,5-alpha]pyrimidine | 7-Hydroxy-5-methyl-2-methylthio-[1,2,4]triazolo[2,3-a]pyrimidine and 7-Hydroxy-5-methyl-2-methylthio-1,3,4-triazaindolizine