Introduction
In modern pharmaceutical development and fine chemical synthesis, heterocyclic compounds play a critical role in building complex molecular structures. Among them, Pyrazine-2,6-Diamine Hydrochloride (CAS: 1370411-48-5) has emerged as an important intermediate due to its unique nitrogen-rich heterocyclic structure and strong reactivity in organic synthesis.
This compound is widely used in research laboratories and industrial applications, especially in the development of pharmaceutical intermediates, functional materials, and advanced organic compounds. With increasing demand for high-purity chemical building blocks, Pyrazine-2,6-Diamine Hydrochloride has become a valuable raw material in global chemical supply chains.
Chemical Overview
Pyrazine-2,6-Diamine Hydrochloride is a salt form of pyrazine-based diamine, characterized by two amino groups (-NH₂) located at the 2 and 6 positions of the pyrazine ring. The hydrochloride form enhances its stability, solubility, and ease of handling in laboratory and industrial environments.
Key Chemical Information:
Chemical Name: Pyrazine-2,6-Diamine Hydrochloride
CAS Number: 1370411-48-5
Molecular Formula: C₄H₇ClN₄
Molecular Weight: 146.58 g/mol
Appearance: White to off-white crystalline powder
Purity: ≥ 95% (typical research grade)
The presence of nitrogen atoms in the pyrazine ring gives the compound strong electron-withdrawing properties, making it highly reactive in substitution and coupling reactions.
Molecular Structure and Properties
The structure of Pyrazine-2,6-Diamine Hydrochloride consists of a symmetrical pyrazine ring substituted with two amino groups. This configuration provides:
High chemical reactivity
Strong hydrogen bonding ability
Enhanced coordination potential with metal ions
Improved solubility in polar solvents due to hydrochloride formation
Physical Properties:
Soluble in water and polar organic solvents
Stable under recommended storage conditions
Sensitive to moisture and light exposure over long periods
Requires controlled temperature storage (2–8°C recommended)
These properties make it particularly suitable for controlled laboratory synthesis and precision chemical manufacturing.
Synthesis and Manufacturing Process
The production of Pyrazine-2,6-Diamine Hydrochloride typically involves multi-step organic synthesis starting from pyrazine derivatives. The process includes:
Nitration or substitution of pyrazine precursors
Reduction of nitro groups to amino groups
Formation of hydrochloride salt using HCl gas or solution
Purification through crystallization or recrystallization
High-quality manufacturing requires strict control of reaction temperature, pH levels, and purification conditions to ensure high yield and purity.
Advanced chemical suppliers often use modern catalytic hydrogenation and controlled crystallization technologies to ensure consistent product quality and batch stability.
Applications in Pharmaceutical Research
One of the most important uses of Pyrazine-2,6-Diamine Hydrochloride is in pharmaceutical intermediate synthesis. Its dual amino-functional structure makes it a versatile building block in drug discovery.
1. Drug Intermediate Development
It is widely used to construct heterocyclic pharmaceutical compounds, particularly those involving:
Antimicrobial agents
Anticancer drug candidates
Anti-inflammatory compounds
CNS (central nervous system) active molecules
2. Heterocyclic Compound Formation
The pyrazine ring is a key scaffold in medicinal chemistry. This compound serves as a precursor for:
Substituted pyrazine derivatives
Nitrogen-rich heterocycles
Bioactive molecular frameworks
3. Lead Compound Optimization
In drug design, modifying amino-substituted pyrazines allows researchers to optimize:
Bioavailability
Binding affinity
Molecular stability
Applications in Organic Synthesis
Beyond pharmaceuticals, Pyrazine-2,6-Diamine Hydrochloride is widely used in general organic chemistry.
Key Uses:
Building block for nitrogen-containing heterocycles
Ligand synthesis in coordination chemistry
Intermediate for functionalized aromatic compounds
Catalyst development in advanced organic reactions
Its symmetrical structure makes it particularly valuable in designing predictable reaction pathways, which is essential in complex synthesis projects.
Applications in Material Science
In addition to chemical and pharmaceutical uses, Pyrazine-2,6-Diamine Hydrochloride is also used in material science research.
Functional Material Development:
Organic semiconductors
Coordination polymers
Metal-organic frameworks (MOFs)
Fluorescent and electrochemical materials
The nitrogen-rich structure allows strong coordination with metals, making it a useful ligand in advanced material design.
Quality Control and Standards
High-purity chemical intermediates require strict quality assurance protocols. Reputable manufacturers implement:
High-performance liquid chromatography (HPLC) testing
Nuclear magnetic resonance (NMR) verification
Mass spectrometry (MS) analysis
Moisture content control
Residual solvent testing
These processes ensure that each batch meets research-grade or industrial-grade specifications, minimizing variability in downstream applications.
Packaging and Storage
Proper handling is essential to maintain chemical stability and performance.
Packaging Options:
Sealed aluminum foil bags
Glass bottles with airtight caps
Double-layer protective containers for bulk shipment
Storage Recommendations:
Store at 2–8°C
Keep away from moisture and direct sunlight
Use inert atmosphere storage if long-term preservation is required
Following these conditions ensures maximum shelf life and consistent chemical behavior.
Transportation and Safety Considerations
As a laboratory chemical, Pyrazine-2,6-Diamine Hydrochloride should be handled with standard chemical safety procedures:
Use protective gloves and eyewear
Avoid inhalation of dust
Handle in well-ventilated environments
Follow local chemical transport regulations
Although not highly hazardous, proper laboratory safety protocols are always recommended.
Why Choose a Reliable Supplier
In the chemical industry, supplier quality directly impacts research outcomes and production efficiency. Choosing a reliable manufacturer ensures:
Consistent purity levels
Stable supply chain
Technical documentation support (COA, SDS)
Custom synthesis capabilities
Competitive pricing for bulk orders
A trusted supplier reduces risk in research and industrial applications while improving reproducibility in experiments.
One such professional supplier is Shanghai Rlavie Technology Co., Ltd., which specializes in heterocyclic compounds and fine chemical intermediates.
The company focuses on pyridine, pyrazine, and pyridazine derivatives, providing customized synthesis services and high-purity research chemicals for global clients.
Market Trends and Demand Outlook
The demand for pyrazine-based compounds is steadily increasing due to:
Expansion of pharmaceutical R&D pipelines
Growth in specialty chemicals market
Rising interest in nitrogen-rich heterocycles
Development of advanced functional materials
As drug discovery becomes more complex, intermediates like Pyrazine-2,6-Diamine Hydrochloride will continue to play a foundational role in chemical innovation.
Frequently Asked Questions (FAQ)
1. What is Pyrazine-2,6-Diamine Hydrochloride used for?
It is mainly used as a chemical intermediate in pharmaceutical synthesis and organic chemistry research.
2. Is it soluble in water?
Yes, the hydrochloride form improves its solubility in water and polar solvents.
3. What makes this compound important in drug development?
Its nitrogen-rich structure makes it ideal for constructing bioactive heterocyclic compounds.
4. How should it be stored?
It should be stored in a cool, dry place at 2–8°C away from light and moisture.
Conclusion
Pyrazine-2,6-Diamine Hydrochloride is a highly valuable heterocyclic intermediate widely used in pharmaceutical research, organic synthesis, and material science. Its unique structure, strong reactivity, and high purity requirements make it an essential building block in modern chemical development.
As global demand for advanced chemical intermediates continues to grow, reliable suppliers and consistent product quality are becoming increasingly important. Companies like Shanghai Rlavie Technology Co., Ltd. play a key role in supporting research institutions and industrial manufacturers with high-quality chemical solutions.
With expanding applications in drug discovery and functional materials, this compound is expected to remain a significant component in the future of fine chemical innovation.
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