Keywords: Hydrazone derivatives; Pyridine amide moiety; Synthesis; Insecticidal activityN. lugens, Nilaparvata lugens; P. xylostella, Plutella xylostella; M. separata, Mythimna separate; H. armigera, Helicoverpa armigera; P. nubilalis, Pyrausta nubilalis; C. pipien