Nomenclature, structures, molecular formulas, and molecular weights of the investigated compounds.

Code	Name	Structure	Mol. Formula	M.Wt.
H1	8-Hydroxy-N′-((2-methoxynaphthalen-1-yl)methylene)-2,3-dimethyl-8H-pyrimido[1,2-b][1,2,4]triazine-7-hydrazide		C21H20N6O3	404.42
H2	N′-((2-Methoxynaphthalen-1-yl)methylene)-8-oxo-4a,5-dihydro-8H-pyrimido[1,2-b][1,2,4]triazine-7-hydrazide		C19H16N6O3	376.36
H3	6-Hydroxy-N′-((2-methoxynaphthalen-1-yl)methylene)-2-oxo-2H-chromene-3-hydrazide		C22H16N2O5	388.37