Roth, H J [Formation tendency of symmetrical bis-Mannich bases of piperazine]. [electronic resource] - Archiv der Pharmazie und Berichte der Deutschen Pharmazeutischen Gesellschaft Feb 1970 - 156-70 p. digital Publication Type: Journal Article ISSN: 0376-0367 Standard No.: 10.1002/ardp.19703030210 doi Subjects--Topical Terms: AminesChemistry, PharmaceuticalMethylationPiperazines