Pyrazine (CAS 290-37-9): Comprehensive Technical Guide
Table of Contents
1. Technical Specifications & Comparative Analysis
| Parameter | Pyrazine | Pyrimidine | Pyridazine |
|---|---|---|---|
| CAS Number | 290-37-9 | 289-95-2 | 289-80-5 |
| Molecular Formula | C4H4N2 | C4H4N2 | C4H4N2 |
| Melting Point | 54°C | 20-22°C | -8°C |
| Boiling Point | 115-116°C | 123-124°C | 208°C |
| Aromaticity Index | 0.68 | 0.72 | 0.65 |
2. Industrial Applications
Core Functional Uses:
- Pharmaceutical intermediates for antitubercular drugs (e.g., Pyrazinamide)
- Flavor enhancer in food industry (GRAS status)
- Key precursor in agrochemical synthesis
- Electron-deficient scaffold in OLED materials
- Coordination ligand in catalytic systems
Material Compatibility:
- Solubility: Water (10 g/100ml), Ethanol (∞), Chloroform (∞)
- Storage: Nitrogen atmosphere, <25°C
- Incompatible Materials: Strong oxidizers, mineral acids
3. Operational Guidelines
Process Optimization:
- Reaction Vessels: Glass-lined or Hastelloy C-276
- Temperature Control: ±1°C tolerance required
- Purification Methods: Vacuum distillation (≤5mmHg)
Safety Protocols:
- PPE Requirements: Chem-resistant gloves (≥8mil), Full-face shield
- Exposure Limits: TWA 2 mg/m³ (ACGIH)
- Spill Management: Vermiculite absorption, pH neutralization
4. Industrial Case Studies
Case 1: Pharmaceutical Intermediate Production
Client: Jiangxi Jianglan Pure Bio-Chem Co., Ltd.
Application: Pyrazinamide API synthesis
Outcome: Achieved 99.7% purity (HPLC), 22% yield improvement
Case 2: Specialty Flavor Development
Client: Shenzhen Hisunt Pharmaceutical Co., Ltd.
Application: Acetylpyrazine synthesis for savory flavors
Outcome: 15% cost reduction vs traditional methods
5. Technical Consultation
For customized formulations or technical specifications:
Email: info@vivalr.com
Tel: (86) 15866781826
Quality Assurance:
- Certifications: ISO 9001:2025, REACH compliant
- Batch Consistency: ±0.5% purity variance
- Lead Time: 3-5 business days (standard orders)


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