1,3-Diazaspiro(4.4)nonane, 2-imino-1-methyl-, monohydrobromide 2-Imino-1-methyl-1,3-diazaspiro(4.4)nonane hydrobromide Bromowodorek 1-metylo-2-imino-5,5-tetrametylenoimidazoliny [Polish] HM2949850