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 Wild Harenna coffee: flavour profiling from the bean to the cup, published in 2020-03-31, which mentions a compound: 13925-00-3, Name is 2-Ethylpyrazine, Molecular C6H8N2, Application In Synthesis of 2-Ethylpyrazine.
As one of the last places where coffee grows spontaneously, the Harenna forest (Ethiopia) is the origin of the coffee analyzed in this study. The anal. of the volatile emission of each processing phase evaluates the chem. fingerprint of the reactions taking place at each stage, leading to the final aroma. The green beans mainly emit non-terpene esters and alkanes. Once the roasting begins, monoterpenes are the main class until 160°C: at this point, 2,6-dimethylpyrazine prevails in the headspaces, as main product of the Maillard reactions. This compound, with its sweet and nut-like aroma, is also detected in the brewed coffee. The shed silverskins are rich in Me chavicol and retain the monoterpenes on the beans: as these compounds are important aroma contributors, the removal of the silverskins prior to roasting seems non-advisable. The grinding of the samples breaks the matrixes and leads to drastic changes in the volatile emissions.
As far as I know, this compound(13925-00-3)Application In Synthesis of 2-Ethylpyrazine can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.