2,6-Bis(1-salicyloylhydrazonoethyl)pyridine

2,6-Diacetylpyridinebis(salicyloylhydrazone)

2,6-Diacetylpyridine bis(2-hydroxybenzoylhydrazone)

2,6-Bis[1-[2-(o-hydroxybenzoyl)hydrazono]ethyl]pyridine

1,1'-(2,6-Pyridinediyl)bis(ethanone 2-hydroxybenzoylhydrazone)

N',N'''-[2,6-Pyridinediylbis(ethan-1-yl-1-ylidene)]bis(2-hydroxybenzenecarbohydrazide)