3-(N,N-dimethylhydrazinocarbonyl)furo[2,3-b]quinoxaline

3-(N'-ethoxymethylene)hydrazinocarbonylmethylene-2-oxo-1,2,3,4-tetrahydroquinoxaline

(Z)-methyl 2-(3-oxo-3,4-dihydroquinoxalin-2(1H)-ylidene)acetate

3-(N,N-Dimethylaminocarbonyl)-furo[2,3-b]quinoxaline hydrochloride

(ethoxycarbonylmethylene)-3 oxo-2 tetrahydro-1,2,3,4 quinoxaline