Pyridine compounds with one or more hydrogen atoms replaced by other functional groups.
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C19H10ClN5O2S
4-Cyclohexyl-2-ethoxy-6-phenyl-3,4-dihydro-2H-pyran
C33H35ClN2O8
4-[3-(3-bromophenyl)-1-oxo-2-propenyl]benzonitrile