1,1'-Methyliminodiethylenebis(1-ethylpiperidinium) dibromide 63869-99-8 Dwubromek bis(beta-etylopiperydynio-etylo)metylaminy [Polish] P-6 Piperidinium, 1,1'-((methylimino)diethylene)bis(1-ethyl-, dibromide