Glyoxal-bis(2-hydroxyanil) Glyoxal-bis(2-hydroxyanil) Synonyms: 2,2-(Ethanediylidenedinitrilo)diphenol; Glyoxal bis(2-hydroxyanil); Di-(2-hydroxyphenylimino)ethane; Bis-(2-hydroxyphenylimino)-ethane CAS NO.: 1149-16-2 Formula: C14H12N2O2 Weight: 240.26