3H-1,2,4-Triazole-3,5(4H)-dione CAS 4019-43-6
| CAS No. | 4019-43-6 |
| Molecular Formula | C2HN3O2 |
| Molecular Weight | 99.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3H-1,2,4-Triazole-3,5(4H)-dione (C2HN3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 3H-1,2,4-Triazole-3,5(4H)-dione (CAS 4019-43-6), a certified reference material (molecular formula C2HN3O2, MW 99.05 g/mol) for analytical method development and quality control.
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), 3H-1,2,4-Triazole-3,5(4H)-dione 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 | C2HN3O2 |
| Molecular Weight | 99.05 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related H Standards
- 1H-1,2,4-Triazole-3-methanol (CAS 123372-69-0)
- 3H-1,2,4-Triazole-3-thione (CAS 36143-39-2)
- 1H-1,2,3-Triazole-5-methanamine (CAS 118724-05-3)
- 1-Ethyl-1,2,4-triazole (CAS 16778-70-4)
- 1H-[1,2,3]Triazole-4-Carbaldehyde (CAS 16681-68-8)
- 1H-1,2,3-Triazole-1-carbaldehyde (CAS 959960-46-4)
- 2H-1,2,3-Triazole-4-carbaldehyde (CAS 4343-71-9)
- 1H-1,2,4-triazole-3-carbaldehyde (CAS 31708-25-5)
Recommended Standards
- Sodium propionate-<SUP>13</SUP>C<SUB>3</SUB> (CAS 152571-51-2)
- 68261-15-4 (2-~13~C)Furan-2,5-dione DTXSID10745713 (CAS 68261-15-4)
- Glycolic Acid-13C Sodium Salt (CAS 1706469-52-4)
- 2,2,2-Trifluoroethylamine (CAS 753-90-2)
- (2,5-Dichlorophenyl)(4-(((4,5-dihydrothiazol-2-yl)thio)methyl)piperidin-1-yl)methanone (CAS 1396761-38-8)
- 3-(chloromethyl)-5-propyl-1,2,4-oxadiazole (CAS 25977-17-7)
- (R)-1-(furan-2-yl)propan-1-amine (CAS 188772-70-5)
- N-Methyl-1-(3-methylbenzo[b]thiophen-2-yl)methanamine (CAS 335032-41-2)
- Methyl 3-amino-2-((tetrahydrofuran-3-yl)methyl)propanoate (CAS 1251098-82-4)
- Defluoro Paroxetine (CAS 1322626-23-2)
- 2-[5-(5-Methyl-1,2-oxazol-4-yl)-1,3-thiazol-2-yl]pyridine (CAS 478245-64-6)
- 4-chloro-7-cyclopentyl-5,6-dimethyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1909319-82-9)
- Ethyl 6-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylate (CAS 66695-42-9)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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