4 5 dibromo 2 methyl 2h 1 2 3 triazole July 8, 2019 16 32 64 128 2 2-dibromo-4-methylhexane 3 5-dibromo-1h-1 2 4-triazole 2 4 5-tribromoimidazole 2-bromo-1 3 4-thiadiazole