Guanidine, N-(2-bromoethyl)-N'-nitro-N-nitroso-, mixt. with 4,5-dihydro-1-nitro-1H-pyrrol-2-amine monohydrobromide Guanidine, N-(2-bromoethyl)-N'-nitro-N-nitroso-, monohydrobromide, compd. with 1-nitro-1H-pyrrol-2-amine (1:1) Guanidine, N-(2-bromoethyl)-N'-nitro-N-nitroso-, monohydroromide, compound with 1-nitro-1H-pyrrol-2-amine (1:1) NSC36885