SEARCH Articles Figures Tables 2- Phenylquinoxaline 2-Acetyl-3-phenylquinoxaline 4-oxide 2-Phenylquinoxaline 4-oxide reactions 6- Methoxy-3-phenylquinoxaline 1-oxide 6- Methoxy-5-nitro-3-phenylquinoxaline 1-oxide 6-Nitro-3-phenylquinoxaline 1-oxide