11-(4-Methyl-1-piperazinyl)-2-nitrodibenz(b,f)(1,4)oxazepine 11-(4-Methylpiperazino)-2-nitrodibenzoxazepine 21636-37-3 BRN 0582289 DIBENZ(b,f)(1,4)OXAZEPINE, 11-(4-METHYL-1-PIPERAZINYL)-2-NITRO-