N,N'-bis-(pyridin-4-ylmethylene)hydrazine;1,4-bis(4-pyridyl)-2,3-diaza-1,3-dutadiene;4-Pyridinecarbaldehyde (4-pyridinylmethylene)hydrazone;1,4-bis(4-pyridyl)-2,3-diazabuta-1,3-diene;Azinobis[(4-pyridyl)methane];
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