In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Coenzyme binding site of glutamate decarboxylase, published in 1980-07-08, which mentions a compound: 3724-19-4, Name is 3-Pyridinepropionic acid, Molecular C8H9NO2, Reference of 3-Pyridinepropionic acid.
Dissociation constants were measured for the binding of a variety of simple analogs of pyridoxal 5′-phosphate to apoglutamate decarboxylase. Compounds studied had a simple alkyl or aryl group and a neg. charged substituent (phosphate, phosphonate, phosphoramidate, sulfate, sulfonate, or carboxylate). Optimum binding to the phosphate binding site of the enzyme was achieved by compounds having a double neg. charge and a tetrahedral geometry. Planar anions and monoanions bound considerably less well. These and previous data were used to derive the magnitudes of the contributions of various coenzyme functional groups to the strength of the apoenzyme-coenzyme interaction.
Here is just a brief introduction to this compound(3724-19-4)Reference of 3-Pyridinepropionic acid, more information about the compound(3-Pyridinepropionic acid) is in the article, you can click the link below.
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem