New 3(2H)-pyridazinone derivatives containing a N'-benzyliden-acetohydrazide moiety at position 2 were synthesized. The structures of these newly synthesized compounds were confirmed by IR, 1H NMR, and MS data. These compounds were tested for their antibacterial, antifungal, antimycobacterial, and cytotoxic activities. The compounds 2-[4-(4-chlorophenyl)-6-(morpholin-4-yl)-3-oxo-(2H)-pyridazin-...

The title compound, C(9)H(9)FN(2)O, was prepared by the reaction between 2-fluoro-benzophenone and acetohydrazide. In the crystal structure, inversion dimers linked by pairs of N-H⋯O hydrogen bonds occur, generating R(2) (2)(8) loops.

In the title mol-ecule, C(7)H(8)N(2)O(2), the acetohydrazide group is planar within 0.014 (2) Å and forms a dihedral angle of 5.35 (8)° with the furan ring. The mol-ecule adopts a trans configuration with respect to the C=N bond. In the crystal, molecules are linked into a chain along the a axis by N-H⋯O hydrogen bonds.