[kwi-nok-suh-leen, -lin]
noun Chemistry.
a colorless, crystalline, water-soluble powder, C 8 H 6 N 2 , used chiefly in organic synthesis.
Also, quinoxalin [kwi-nok-suh-lin] .

1880–85; quin(ine) + (gly)oxal + -ine2

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