2-bromo-5-methyl-7H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one 7H-1,3,4-thiadiazolo[3,2-a]pyrimidin-7-one, 2-bromo-5-methyl- InChI=1/C6H4BrN3OS/c1-3-2-4(11)8-6-10(3)9-5(7)12-6/h2H,1H