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 Thermal characterization of antimicrobial peptide stigmurin employing thermal analytical techniques, published in 2019-12-31, which mentions a compound: 13925-00-3, Name is 2-Ethylpyrazine, Molecular C6H8N2, Category: chiral-catalyst.
Stigmurin is a peptide with amidated C-terminus (FFSLIPSLVGGLISAFK-NH2) identified in the transcriptome of the scorpion Tityus stigmurus that has shown antimicrobial action against methicillin-resistant pathogens and low antihemolytic activity, and recently proved to be efficient in controlling sepsis. Despite its pharmacol. potential, there is no report about thermal studies for the characterization of the amorphous solid. The objective of this work is to characterize stigmurin using thermoanal. techniques in the solid state in an inert and oxidative atm. Stigmurin presents glass transition temperature at 149 °C. The results of TG-FTIR and pyrolysis suggest that the pathways for decomposition include homolytic breakdown of the side chains of amino acid residues. Decomposition possibly begins at the N-terminus, with formation of the aromatic compounds, amines, nitriles, alcs., and ethers among others followed by defragmentation reactions (mainly decarboxylation and deamination) and intramol. condensation reactions. It generates compounds similar to 2,5-diketopiperazine or DKP, and releases water and low mol. mass products (CO2, NH3, CO, HCNO). The decomposition of stigmurin is an endothermic process where the product of decomposition is originated in the liquid state according to DSC-photovisual images. Stigmurin is more stable in nitrogen atm. than synthetic air. This approach provides important information about the thermal decomposition of stigmurin, a mol. endowed with potent antimicrobial activity, supplying relevant parameters (temperature, degradation products, etc.) for technol. strategies focusing on quality control and development studies of preformulation involving stigmurin and synthetic peptides in general.
After consulting a lot of data, we found that this compound(13925-00-3)Category: chiral-catalyst can be used in many types of reactions. And in most cases, this compound has more advantages.