7-Bromopyrrolo[2,1-F][1,2,4]triazin-4-amine937046-98-5100 % similar 4-Amino-7-bromoimidazo[2,1-F][1,2,4]triazine1235374-44-354 % similar Gs-4415241191237-69-034 % similar 5-Bromo-[1,2,4]triazolo[1,5-A]pyridin-2-ylamine1010120-55-433 % similar Remdesivir N-21191237-80-532 % similar Remdesivir impurity21355357-49-131 % similar 3-Bromoimidazo[1,2-B]pyridazine18087-73-531 % similar 2-Amino-3-bromopyridine13534-99-131 % similar