6-Methylpyrido[2,3-b]pyrazine: Properties & Lab FAQs

6-Methylpyrido[2,3-b]pyrazine is a bicyclic nitrogen-containing heterocyclic compound featuring a pyridine ring fused to a pyrazine ring with a methyl substituent at the 6-position, making it a versatile building block in medicinal chemistry and materials science research.

Chemical Name

6-Methylpyrido[2,3-b]pyrazine

Ring System

Bicyclic; pyridine fused to pyrazine

Methyl Substitution Position

Position 6 of the pyrido[2,3-b]pyrazine scaffold

Aladdin SKU

M724716

Primary Application

Heterocyclic building block for medicinal chemistry and materials research

Nitrogen Atoms

Three ring nitrogen atoms (one pyridine N, two pyrazine N)

What Is 6-Methylpyrido[2,3-b]pyrazine?

6-Methylpyrido[2,3-b]pyrazine is a bicyclic aromatic N-heterocycle formed by the fusion of a pyridine ring with a pyrazine ring. The descriptor [2,3-b] specifies the bond connectivity between the two ring systems, and the prefix 6-methyl indicates a methyl group at the 6-position of the fused scaffold. The compound belongs to the broader pyrido[2,3-b]pyrazine family, which has attracted interest in pharmaceutical and agrochemical research owing to the electron-deficient, planar aromatic character imparted by the three ring nitrogen atoms. This scaffold can participate in hydrogen bonding, metal coordination, and pi-stacking interactions, properties that make it attractive as a core or building block in drug discovery programs and functional material design.

Solubility and Solvent Compatibility

As a moderately electron-deficient aromatic heterocycle, 6-Methylpyrido[2,3-b]pyrazine is generally expected to dissolve in common polar aprotic solvents such as dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), and acetonitrile. Solubility in aqueous systems is typically limited at neutral pH but may increase under acidic conditions due to protonation of the ring nitrogen atoms. For stock solution preparation, DMSO is the solvent most commonly used by researchers working with similar N-heterocyclic scaffolds. Researchers should prepare a fresh solubility test at their target concentration before committing to large-scale dissolution. Specific solubility values for this compound have not been confirmed in the current source material and should be verified experimentally or consulted in the product's certificate of analysis.

Storage and Stability Recommendations

Aromatic N-heterocycles of this structural class are generally stable when stored under appropriate conditions. It is recommended to store 6-Methylpyrido[2,3-b]pyrazine in a tightly sealed container, away from light, moisture, and strong oxidizing agents. Room temperature or refrigerated storage (2–8 °C) is typically suitable for solid-form heterocyclic building blocks of this type, although the precise recommended storage conditions should be confirmed on the Aladdin Scientific product page or certificate of analysis for SKU M724716. After opening, minimize exposure to atmospheric moisture by resealing promptly and, where appropriate, storing under an inert atmosphere such as nitrogen or argon. Solutions prepared in organic solvents should be used promptly or stored at low temperature to minimize degradation.

Applications in Research

The pyrido[2,3-b]pyrazine scaffold is a privileged heterocyclic framework encountered in the design of kinase inhibitors, antimicrobial agents, and other bioactive small molecules. The methyl group at position 6 introduces steric and electronic modulation that can influence binding affinity and selectivity in structure-activity relationship (SAR) studies. Beyond medicinal chemistry, electron-deficient fused N-heterocycles are employed as ligands in transition-metal coordination chemistry and as components in organic semiconductors and fluorescent materials. Researchers working in drug discovery, chemical biology, and advanced materials may find 6-Methylpyrido[2,3-b]pyrazine useful as a starting material, intermediate, or probe compound. Specific literature applications should be verified by the researcher using primary publications.

Ordering and Availability from Aladdin Scientific

6-Methylpyrido[2,3-b]pyrazine is available from Aladdin Scientific under SKU M724716. Researchers and procurement staff can place orders via the Aladdin Scientific website or by contacting customer service directly. When ordering, confirm the required quantity, purity grade, and any regulatory or documentation requirements (e.g., certificate of analysis, safety data sheet) at the time of purchase. For bulk or custom quantities, please inquire with Aladdin's sales team. Shipping and handling conditions for this compound should be reviewed in the product's safety data sheet prior to ordering to ensure compliance with institutional and carrier regulations.

Frequently asked questions

What is the molecular structure of 6-Methylpyrido[2,3-b]pyrazine?

6-Methylpyrido[2,3-b]pyrazine consists of a pyridine ring fused to a pyrazine ring at the [2,3-b] bond positions, creating a planar, electron-deficient bicyclic aromatic system with three nitrogen atoms in the ring framework. A methyl group is attached at the 6-position of this fused scaffold, providing steric and electronic modulation relative to the unsubstituted parent compound.

Which solvents are recommended for dissolving 6-Methylpyrido[2,3-b]pyrazine?

Polar aprotic solvents such as DMSO, DMF, and acetonitrile are generally recommended as first-choice options for dissolving N-heterocyclic building blocks of this type. Aqueous solubility is typically low at neutral pH but may improve under acidic conditions. Researchers should verify solubility experimentally at their required concentration and consult the certificate of analysis for SKU M724716 for confirmed data.

How should 6-Methylpyrido[2,3-b]pyrazine be stored to maintain stability?

The compound should be stored in a tightly sealed container, protected from light and moisture, and kept away from strong oxidizing agents. Room temperature or refrigerated storage (2–8 °C) is generally appropriate for solid aromatic N-heterocycles; however, users should confirm the exact storage conditions specified on the Aladdin Scientific product page or the certificate of analysis for SKU M724716.

What are the main research applications of 6-Methylpyrido[2,3-b]pyrazine?

This compound serves as a heterocyclic building block in medicinal chemistry, particularly in the synthesis of kinase inhibitors and other bioactive small molecules where the pyrido[2,3-b]pyrazine scaffold is employed. It is also of interest in coordination chemistry as a nitrogen-donor ligand and in materials science for the development of organic semiconductors or fluorescent compounds. Researchers should consult primary literature to identify specific applications relevant to their projects.

How can I order 6-Methylpyrido[2,3-b]pyrazine from Aladdin Scientific?

6-Methylpyrido[2,3-b]pyrazine is listed under SKU M724716 on the Aladdin Scientific platform. Orders can be placed online through the Aladdin website or by contacting the customer service team. For bulk quantities or special documentation requirements, please reach out to the Aladdin sales department directly.

References

1. Aladdin Scientific product listing: 6-Methylpyrido[2,3-b]pyrazine, SKU M724716.
2. General reference: March's Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 7th ed. Wiley. (Textbook-level background on N-heterocyclic chemistry.)

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