1,2,4-Triazol-5-one CAS 42131-33-9
| CAS No. | 42131-33-9 |
| Molecular Formula | C2HN3O |
| Molecular Weight | 83.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2,4-Triazol-5-one (C2HN3O) contains an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 1,2,4-Triazol-5-one (CAS 42131-33-9), a certified reference material (molecular formula C2HN3O, MW 83.05 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1,2,4-Triazol-5-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 | C2HN3O |
| Molecular Weight | 83.05 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 3 |
Related Triazol Standards
- 3H-1,2,4-Triazol-3-one (CAS 4045-72-1)
- 2H-1,2,3-Triazol-2-amine (CAS 123312-76-5)
- 1H-1,2,3-Triazol-1-amine (CAS 584-14-5)
- 1H-1,2,4-Triazol-1-amine (CAS 24994-60-3)
- 2H-1,2,3-triazol-4-amine (CAS 573713-80-1)
- 1H-1,2,3-Triazol-5-ol (CAS 106377-28-0)
- 1H-1,2,4-Triazol-5(4H)-one (CAS 122333-30-6)
- 1H-1,2,4-Triazol-5-ol (CAS 122333-32-8)
Recommended Standards
- CAS 57080-79-2 (CAS 57080-79-2)
- Kr-<SUP>83</SUP>Kr (CAS 13965-98-5)
- 4-Methyl-4H-1,2,4-triazole (CAS 10570-40-8)
- CAS 285977-81-3 (CAS 285977-81-3)
- S-(2-nitrophenyl)-L-cysteine (CAS 60115-45-9)
- 4-Bromo-5-iodo-6-(trifluoromethyl)pyrimidine (CAS 1706458-44-7)
- 1-(6-Phenyl-3a,4,8,8a-tetrahydro-[1,3]dioxepino[5,6-d]isoxazol-3-yl)ethan-1-one (CAS 317820-36-3)
- 4-fluoro-6-methyl-1H-indazole (CAS 885522-09-8)
- 2,3,3,3-Tetrafluoropropanal (CAS 24528-41-4)
- 5-Fluoro-4H-chromen-4-one (CAS 1386253-18-4)
- Chloro(phenyl)(trifluoromethyl)-l3-iodane (CAS 2204248-93-9)
- Cefuroxime Sodium EP Impurity I (CAS 39684-61-2)
- (1-Methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)methanol (CAS 676236-50-3)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com