58131-57-0 Benzofurazan, 4-(4-methyl-1-piperazinyl)-7-nitro-, 3-oxide Benzofurazan, 4-(4-methyl-1-piperazinyl]-7-nitro-, 3-oxide NSC179940 WLN: T56 BNONJ BO FNW I- AT6N DNTJ D1