The Collaborative International Dictionary
Quinoxaline \Quin*ox"a*line\, n. [Quinoline + glyoxal.] (Chem.) Any one of a series of complex nitrogenous bases obtained by the union of certain aniline derivatives with glyoxal or with certain ketones. [Written also chinoxaline.]
Wiktionary
n. (context organic compound English) A bicyclic heterocycle consisting of a benzene ring fused to that of pyrazine.
Wikipedia
A quinoxaline, also called a benzopyrazine, in organic chemistry, is a heterocyclic compound containing a ring complex made up of a benzene ring and a pyrazine ring. It is isomeric with other naphthyridines including quinazoline, phthalazine and cinnoline. It is a colorless oil that melts just above room temperature. Although quinoxaline itself is mainly of academic interest, quinoxaline derivatives are used as dyes, pharmaceuticals, and antibiotics such as olaquindox, carbadox, echinomycin, levomycin and actinoleutin.
Usage examples of "quinoxaline".
Nitroso Dye-stuffs -- Nitro Dye-stuffs -- Azo Dye-stuffs -- Substantive Cotton Dye-stuffs -- Azoxystilbene Dye-stuffs -- Hydrazones -- Ketoneimides -- Triphenylmethane Dye-stuffs -- Rosolic Acid Dye-stuffs -- Xanthene Dye-stuffs -- Xanthone Dye-stuffs -- Flavones -- Oxyketone Dye-stuffs -- Quinoline and Acridine Dye-stuffs -- Quinonimide or Diphenylamine Dye-stuffs -- The Azine Group: Eurhodines, Safranines and Indulines -- Eurhodines -- Safranines -- Quinoxalines -- Indigo -- Dye-stuffs of Unknown Constitution -- Sulphur or Sulphine Dye stuffs -- Development of the Artificial Dye-stuff Industry -- The Natural Dye-stuffs -- Mineral Colours -- Index.