2 bromo 5 methyl 1 3 4 thiadiazole July 8, 2019 16 32 64 128 2-bromo-1 3 4-thiadiazole 2-amino-5-bromo-1 3 4-thiadiazole 2 4 5-trimethylthiazole 2 4 5-tribromoimidazole
