In fine chemicals and pharmaceutical R&D, nitrogen-containing heterocycles are indispensable. Among them, pyrazine derivatives stand out for their aromatic structure and versatile functionalization. This article highlights three representative products - 5-Methyl-2-pyrazinecarboxylic acid (CAS 5521-55-1), 2,5-Dimethylpyrazine (CAS 123-32-0), and Pyrazine-2,5-dicarboxylic Acid (CAS 122-05-4) - and their value across drug synthesis, flavoring, and advanced materials.
5-Methyl-2-pyrazinecarboxylic Acid: Key Pharmaceutical Intermediate
5-Methyl-2-pyrazinecarboxylic acid is a high-value heterocyclic building block. Its pyrazine ring carries both a methyl group and a carboxylic acid group, enabling esterification, amidation, and diverse derivatization for complex molecular architectures.
As a key intermediate, it is used in the synthesis of Acipimox (lipid-lowering) and Glipizide (second-generation sulfonylurea antidiabetic). It also serves as a ligand in lanthanide MOF synthesis, forming 3D networks with Eu(III) and other metal ions.
2,5-Dimethylpyrazine: Roasted Aroma Workhorse
2,5-Dimethylpyrazine is a colorless to pale yellow liquid with a musty cocoa odor and roasted, nutty nuances. It occurs naturally in asparagus, wheat bread, Swiss cheese, black tea, soybeans, malt, and seafood.
Widely used in potato, beer, and chicken flavors, it delivers fried and roasted notes. Typical usage in baked goods, cereals, meats, soups, and gravies is around 10 ppm. As FEMA 3272, it is a compliant and reliable flavor ingredient.
Pyrazine-2,5-dicarboxylic Acid: MOF Ligand
Pyrazine-2,5-dicarboxylic acid features symmetric carboxylic acid groups at the 2- and 5-positions, making it an ideal ligand for MOFs and coordination polymers.
A Zr-PzDC MOF using this ligand achieved a maximum Pb(II) adsorption capacity of 298.39 mg/g, outperforming many adsorbents. It is also used in proton-conducting coordination polymers for fuel cell membranes and as an analytical standard.
Why Source These Pyrazine Products?
5-Methyl-2-pyrazinecarboxylic acid cas:5521-55-1: proven pharma intermediate for Acipimox and Glipizide
2,5-Dimethylpyrazine cas:123-32-0: FEMA-certified cocoa/roasted flavor for food applications
Pyrazine-2,5-dicarboxylic Acid cas:122-05-4: high-performance MOF ligand for adsorption and proton conduction
Conclusion
These three pyrazines share a heterocyclic core but serve distinct markets. Whether you need a pharmaceutical intermediate, a flavor ingredient, or a MOF ligand, our pyrazine portfolio offers consistent quality and reliable supply.
