1-(2-Pyridyl)ethanone phenylhydrazone

2-[1-(2-Phenylhydrazono)ethyl]pyridine

1-(2-Pyridinyl)ethanone phenylhydrazone

Methyl(2-pyridyl) ketone phenylhydrazone

1-[1-(2-Pyridinyl)ethylidene]-2-phenylhydrazine