Substituted pyridines Substituted pyridines are a class of compounds derived from the pyridine base structure. List of substituted pyridines CompoundStructure Substituted morpholinesSubstituted piperazinesSubstituted piperidinesSubstituted pyridinesSubstituted pyrrolidinesSubstituted tetrahydropyridinesSubstituted imidazopyridinesSubstituted pyridodiazepines Pyridine 2,3'-Bipyridine Pyridoxine Nikethamide Paraquat Anpirtoline Phenatine Nicotinamide mononucleotide (NMN)