Eight intermediate hydrazones were synthesized through the reaction of hydrazine with salicylic aldehyde,1,4-dioxoquinoxaline formaldehyde,propanal,acetone,2-butylene aldehyde,cyclopentanone,cyclohexanone,then the eight novel dihydrazones were synthesized with 1,4-dioxoquinoxaline formaldehyde reaction with the hydrazones,and then characterized.

Study on the bacteriostasis of 2-ethylformate-3-formaldehyde thiosemicarbazone-quinoxaline-1,4-dioxide;