5-ethyl-2-(2-piperidin-1-ylethyl)pyridine

5-nitroso-2-phenylpyrimidine-4,6-diamine

2-(5-ethylpyridin-2-yl)-1-phenylethanone

2-bromo-3-ethyl-6-methyl-pyridine

3-bromo-5-ethyl-2-methyl-pyridine