120873-27-0 2-Amino-3H-4,5-dihydropyrido-(2,3-e)-1,3,4-triazepin-5-one 5H-Pyrido(2,3-e)(1,2,4)triazepin-5-one, 1,4-dihydro-2-amino- 5H-Pyrido(2,3-e)(1,3,4)triazepin-5-one, 3,4-dihydro-2-amino-