3,4-Pyridinediamine, 5-bromo-N4-(2-phenylethyl)- 3-Amino-5-bromo-4-phenylethylaminopyridine 5-Bromo-N'-(2-phenylethyl)-3,4-pyridinediamine Pyridine, 3-amino-5-bromo-4-(phenylethylamino)- US7546200