4-Amino-3,5-dibromopyridine84539-34-431 % similar 2-Bromo-3-chloro-5-(trifluoromethyl)pyridine75806-84-730 % similar 3,6-Dichloro-1,2,4,5-tetrazine106131-61-730 % similar 1,2,4,5-Tetrachlorobenzene95-94-330 % similar