Table 12: Summary of mass spectroscopic data of the 1-(4-acetophenyl)-4-(2-aryl-1-diazenyl)-piperazine series (17).

Series # X Formula Calc. Mass (amu) Found Mass (amu)
17a p-CO2CH3 C20H22N4O3 366.1692 366.1682
17b p-Br C18H19N4OBr 386.0742 386.0726
17c p-CH3 C19H22N4O 322.1793 322.1801
17e p-CN C19H19N5ONa 356.1482 356.1483
17f p-CO2Et C21H24N4O3Na 403.1741 403.1726