2,6-Pyrazinediamine, 3-(3-amino-1,2,4-oxadiazol-5-yl)-5-chloro- 3-(3-Amino-1,2,4-oxadiazol-5-yl)-5-chloro-2,6-pyrazinediamine 3-Amino-5-(3,5-diamino-6-chloropyrazin-2-yl)-1,2,4-oxadiazole 73631-29-5 Cgs 4270 Cgs-4270