4,6-Dinitrobenzofurazan-n-oxide ,its CAS number is 5128-28-9,it can be called 2,1,3-benzoxadiazole, 4,6-dinitro-, 1-oxide ; 4,6-Dinitro-2,1,3-benzoxadiazole 1-oxide ; 4,6-dinitrobenzofuroxan ; Benzofurazan, 4,6-dinitro-, 1-oxide .