142632-31-3 3-Piperidinecarboxamide, 1,1'-(1,4-phenylenebis(methylene))bis(N,N-diethyl-, dihydrobromide, (R*,R*)-(+-)- A-1 alpha,alpha'-Bis(3-(N,N-diethylcarbamoyl)piperidino)-p-xylene dihydrobromide