1,2,4-Triazolo(3,4-a)phthalazin-3(2H)-one, 8-chloro-2-(3-(4-phenyl-1-piperazinyl)propyl)- 124556-76-9 8-Chloro-2-(3-(4-phenyl-1-piperazinyl)propyl)-1,2,4-triazolo(3,4-a)phthalazin-3(2H)-one