8-methoxy-6,7-dimethyl-2-(methylamino)-3-(methylcarbamoyl)quinoxaline

1-Amino-2-methoxy-3,4-dimethyl-6-nitrobenzene

2-hydroxy-8-methoxy-6,7-dimethyl-4-quinoxaline N-oxide

2-hydroxy-8-methoxy-3-(methoxycarbonyl)-6,7-dimethyl-4-quinoxaline N-oxide

1-methoxy-2-(methoxycarbonylmethylenecarbonylamino)-5,6-dimethyl-3-nitrobenzene