3,4-DIAMINOPYRIDINE 3,4-Pyridinediamine (9CI) 4,5-Diaminopyridine 5-22-11-00266 (Beilstein Handbook Reference) 54-96-6 BRN 0110232 Diamino-3,4 pyridine EINECS 200-220-9 NSC 521760 Pyridine, 3,4-diamino- SC10