Synonyms: 2-Pyridinecarboxaldehyde,(2-pyridinylmethylene)hydrazone (9CI); Picolinaldehyde, azine (6CI,7CI,8CI);1,4-Bis(2-pyridyl)-2,3-diaza-1,3-butadiene; 2-Pyridinaldazine;2-Pyridinecarboxaldehyde, azine; N,N'-Bis(2-pyridinylmethylene)hydrazine;N,N'-Bis(2-pyridylmethylene)hydrazine; NSC 66164; NSC 685294;Pyridine-2-aldazine; Pyridine-2-carbaldehyde azine