What is 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.] called?

quinoxaline — 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.]. (Webster's 1913.)

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