4-23-00-01227 (Beilstein Handbook Reference) 4-Quinoxaline mono-N-oxide 6935-29-1 BRN 0117865 NSC 193509 NSC 48942 QUINOXALINE, 1-OXIDE Quinoxaline 1-oxide Quinoxaline N-oxide Quinoxaline monooxide Quinoxaline, N-monooxide