4-(4-Propylpiperazinyl)-7-nitrobenzofuroxan 4-Nitro-7-(4-propyl-1-piperazinyl)benzofurazan 1-oxide 61785-52-2 B2766 BENZOFURAZAN, 4-NITRO-7-(4-PROPYL-1-PIPERAZINYL)-, 1-OXIDE NSC 228105