8-Chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrazine CAS 20914-71-0
| CAS No. | 20914-71-0 |
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 8-Chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrazine is closely related to a nitrile group, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
8-Chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrazine (CAS 20914-71-0) is a high-purity analytical reference standard with the molecular formula C6H5ClN4 and a molecular weight of 168.58 g/mol.
Based on its molecular formula C6H5ClN4, 8-Chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrazine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 168.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 8-Chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrazine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chloro Standards
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-2(3H)-one (CAS 1000342-80-2)
- 4-Chloro-2-methoxypyridine-3-carbonitrile (CAS 1008451-56-6)
- 6-Chloro-2-methyl-9H-purine (CAS 100859-35-6)
- 3-chloro-6-methyl-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1019033-24-9)
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Recommended Standards
- 7-Chlorophthalide (CAS 70097-45-9)
- 8-Chloro-3-methyl-1,2,4-triazolo[4,3-α]pyrazine (CAS 68774-78-7)
- 7-Chloroimidazo[1,2-a]pyrimidin-5-amine (CAS 57473-36-6)
- 8-Chloro-6-methyl-[1,2,4]triazolo[4,3-b]pyridazine (CAS 28593-25-1)
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