quinoxaline

[kwi-nok-suh-leen, -lin]

noun Chemistry.

a colorless, crystalline, water-soluble powder, C8H6N2, used chiefly in organic synthesis.

Also quin·ox·a·lin [kwi-nok-suh-lin] /kwɪˈnɒk sə lɪn/.

Origin of quinoxaline

1880–85; quin(ine) + (gly)oxal + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019