quinoxaline
noun
qui·nox·a·line
| \ kwi-ˈnäk-sə-ˌlēn
, -ˌlīn
\
, -ˌlīn
\
Medical Definition of quinoxaline
: a weakly basic bicyclic compound C8H6N2 made by condensing the ortho form of phenylenediamine with glyoxal and having fused benzene and pyrazine rings
also
: any of various derivatives of quinoxaline having antibiotic properties