pyridine-2-sulfonic acid
4-Ethoxyaniline
2-bromo-pyridine
2-chloropyridine
(4-ethoxy-phenyl)-[2]pyridyl-carbamoyl chloride
N-(4-ethoxy-phenyl)-N',N'-diethyl-N-[2]pyridyl-ethylenediamine
N-(4-ethoxy-phenyl)-N'-ethyl-N-[2]pyridyl-urea
1,2-bis-[N'-(4-ethoxy-phenyl)-N'-[2]pyridyl-ureido]-ethane
5-(4-ethoxy-phenyl)-5-[2]pyridyl-hydantoic acid