ZWK9VBZ5ZX 95-58-9 2-Chloro-3-methylpyrazine Pyrazine, 2-chloro-3-methyl- EINECS 202-434-8 2-Methyl-3-chloropyrazine NSC 41093 UNII-ZWK9VBZ5ZX CAS 95-58-9
| CAS No. | 95-58-9 |
| Molecular Formula | C5H11ClN2 |
| Molecular Weight | 134.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures ZWK9VBZ5ZX 95-58-9 2-Chloro-3-methylpyrazine Pyrazine, 2-chloro-3-methyl- EINECS 202-434-8 2-Methyl-3-chloropyrazine NSC 41093 UNII-ZWK9VBZ5ZX under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
ZWK9VBZ5ZX 95-58-9 2-Chloro-3-methylpyrazine Pyrazine, 2-chloro-3-methyl- EINECS 202-434-8 2-Methyl-3-chloropyrazine NSC 41093 UNII-ZWK9VBZ5ZX (CAS 95-58-9) is a high-purity analytical reference standard with the molecular formula C5H11ClN2 and a molecular weight of 134.61 g/mol.
The molecular framework of ZWK9VBZ5ZX 95-58-9 2-Chloro-3-methylpyrazine Pyrazine, 2-chloro-3-methyl- EINECS 202-434-8 2-Methyl-3-chloropyrazine NSC 41093 UNII-ZWK9VBZ5ZX (C5H11ClN2) is characterized by chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H11ClN2 |
| Molecular Weight | 134.61 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
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- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com