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2,5-Pyridinediacetonitrile

4-[N-(2-pyridylamino)ethoxy]benzaldehyde

5-[4-[N-(2-pyridylamino)ethoxy]benzylidene]thiazolidine-2,4-dione

1-(3-Pyridyl)-1,4-butanediol

N-(4-pyridyl)-3,4-dihydroxybutyramide

3-(2-Pyridyldithio)propanoic acid

3-(2-Pyridyldithio)propanoic acid hydrazide

2-(2-Pyridinylamino)-benzenethiol

N-[s-(2-pyridylthioethyl)-t-boc-aminooxyacetamide

3-Pyridyl trifluoromethanesulfonate