2H-[1,2,4]triazolo[4,3-a]pyrazin-3-one CAS 53975-75-0
| CAS No. | 53975-75-0 |
| Molecular Formula | C5H10N4O |
| Molecular Weight | 142.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2H-[1,2,4]triazolo[4,3-a]pyrazin-3-one (CAS 53975-75-0), molecular formula C5H10N4O and molecular weight 142.16 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, 2H-[1,2,4]triazolo[4,3-a]pyrazin-3-one is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 142.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 2H-[1,2,4]triazolo[4,3-a]pyrazin-3-one 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 | C5H10N4O |
| Molecular Weight | 142.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 4 |
Related H Standards
- triazolo[1,5-a]pyridin-6-amine (CAS 1547091-15-5)
- [1,2,3]triazolo[1,5-a]pyridin-4-amine (CAS 697739-18-7)
- 3-methyl-[1,2,4]triazolo[4,3-a]pyrazine (CAS 33590-17-9)
- 1,2,4-Triazolo[4,3-a]pyridin-3-amine 2H-[1,2,4]triazolo[4,3-a]pyridin-3-imine 767-62-4 NSC76010 [1,2,4]Triazolo[4,3-a]pyridin-3(2H)-imine s-Triazolo[4,3-a]pyridine, 3-amino- (CAS 767-62-4)
- [1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-amine (CAS 3176-50-9)
- [1,2,4]triazolo[1,5-a]pyrimidin-2-amine (CAS 13223-53-5)
- [1,2,4]triazolo[4,3-a]pyrazin-3-amine (CAS 13258-12-3)
- [1,2,4]triazolo[4,3-b]pyridazin-6-amine (CAS 19195-46-1)
Recommended Standards
- 2H,6H,7H-pyrazolo[3,4-d]pyridazin-7-one (CAS 219631-04-6)
- 2H-Isoindole-1-carbonitrile (CAS 40073-39-0)
- 2-Ethynyl-1H-benzo[d]imidazole (CAS 53243-15-5)
- 2-Hydrazinyl-6-methyl-2,3-dihydropyrimidin-4(1H)-one (CAS 887570-24-3)
- N-Propylpyridin-4-amine dihydrochloride (CAS 727732-04-9)
- 5-Bromo-1-(3-fluorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 886360-92-5)
- 2-Amino-5-hydroxy-7-methyl-4-phenyl-4H-pyrano[3,2-c]pyridine-3-carbonitrile (CAS 193887-94-4)
- 2-(4-(Difluoromethyl)-6-methoxy-5-nitropyridin-2-yl)acetonitrile (CAS 1804870-92-5)
- Hyoscyamine Impurity 5 (CAS CATO-C4X-34375)
- 4-Chloro-2-fluoro-1-(methylsulfonyl)benzene (CAS 1261284-27-8)
- 9-(Chloromethyl)-9h-xanthene (CAS 136453-31-1)
- 4-(4'-Dimethylaminophenyl)-1,2,4-Triazoline-3,5-Dione (DAPTAD) (CAS 111256-83-8)
- 3-Methoxy-4-(1,3-thiazol-4-ylmethoxy)benzoic acid (CAS 923817-60-1)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
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