Synonyms: Diazene,1,1'-carbonylbis[2-phenyl- (9CI); Urea, 1,3-bis(phenylimino)- (6CI); Urea,bis(phenylimino)- (8CI); 1,1'-Carbonylbis[2-phenyldiazene];1,2,4,5-Tetraazapenta-1,4-dien-3-one, 1,5-diphenyl-; Diphenylcarbadiazone;Diphenylcarbodiazane; Diphenylcarbodiazine