1,3-Propanediamine, N,N-dimethyl-N'-(1,3,7-trimethyl-1H-pyrazolo(3,4-b)quinolin-4-yl)-, dihydrochloride 56476-51-8 BL 3849A N,N-Dimethyl-N'-(1,3,7-trimethyl-1H-pyrazolo(3,4-b)quinolin-4-yl)quinoline dihydrochloride