A chemical compound containing two glyoxal groups or derived from glyoxaline; a specialized term in organic chemistry.
From 'bis-' (two) + 'glyoxal' (a chemical compound) + '-ine' (chemical suffix for nitrogen-containing compounds). This is technical nomenclature from 19th-20th century synthetic chemistry.
Bisglyoxaline sits in the graveyard of chemical names—as modern IUPAC nomenclature evolved, descriptive names like 'bisglyoxaline' got replaced by systematic names that encode the exact molecular structure, but the old names still appear in vintage chemistry papers.
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