The present invention is directed to fused [d] pyridazin-7-ones of formula (I). The invention is also directed to methods for making and using the fused [d] pyridazin-7-ones. In particular, the compounds of the present invention may he effective in the treatment of diseases or disease states related to the activity of VEGFR2, MLKl and CDK5 enzymes, including, for example, angiogenic disorders and neurodegenerative diseases.