1-(1H-[1,2,4]Triazolo[4,3-b][1,2,4]triazol-1-yl)ethanone CAS 56424-48-7
| CAS No. | 56424-48-7 |
| Molecular Formula | C5H5N5O |
| Molecular Weight | 151.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H5N5O, 1-(1H-[1,2,4]Triazolo[4,3-b][1,2,4]triazol-1-yl)ethanone contains an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 151.13 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.
1-(1H-[1,2,4]Triazolo[4,3-b][1,2,4]triazol-1-yl)ethanone (CAS 56424-48-7), molecular formula C5H5N5O and molecular weight 151.13 g/mol, is a CATO reference standard with documented purity and traceability.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H5N5O |
| Molecular Weight | 151.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 5 |
Related H Standards
- [1,2,4]Triazolo[1,5-a][1,3,5]triazine-5,7-diamine (CAS 102365-46-8)
- 6-methyl[1,2,4]triazolo[4,3-b][1,2,4]triazin-7(8H)-one (CAS 19542-10-0)
- 1-Methyl-[1,2,4]triazolo[1,5-b][1,2,4]triazin-7(1H)-one (CAS 89569-73-3)
- 1-Methyl-[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-one (CAS 59105-03-2)
- 3-Methyl-[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-one (CAS 57250-39-2)
- 5-Methyl-[1,2,4]triazolo[4,3-a][1,3,5]triazin-7(1H)-one (CAS 200350-23-8)
- 7-Methyl-[1,2,4]triazolo[4,3-a][1,3,5]triazin-5(1H)-one (CAS 500538-69-2)
- 7-Methyl-[1,2,4]triazolo[5,1-c][1,2,4]triazin-4(1H)-one (CAS 57351-75-4)
Recommended Standards
- 1-(Trifluoromethyl)-2-azabicyclo[2.1.1]Hexane (CAS 1935321-50-8)
- 3-(2,2,2-Trifluoroethyl)-2,5-dihydro-1H-pyrrole (CAS 1895856-54-8)
- 1-Methyl-1H-pyrazolo[4,3-e][1,2,4]triazin-3(2H)-one (CAS 888490-32-2)
- (1R,5R,6R)-6-(trifluoromethyl)-2-azabicyclo[3.1.0]Hexane (CAS 1821803-65-9)
- 1-Methoxy-4-nitrobutane (CAS 2228909-67-7)
- 1-Methyl-4-(2-methylallyl)benzene (CAS 40296-92-2)
- N-methyl-1-(4-phenylthiazol-5-yl)methanamine (CAS 920439-00-5)
- 1-(2-fluorophenyl)-5-(propan-2-yl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 1155460-50-6)
- 2-Aminonaphthalen-1-ol (CAS 606-41-7)
- 1-Allyl-4-methyl-1H-pyrrole-2-carboxylic acid (CAS 397329-68-9)
- (1R,3r)-3-((tert-butoxycarbonyl)amino)cyclobutyl methanesulfonate (CAS 871014-17-4)
- 1-(2-(4-Fluorophenyl)-1-methyl-1H-imidazol-5-yl)ethan-1-one (CAS 944898-54-8)
- Tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene][2-thienylmethylene]ruthenium(II) dichloride (CAS 1190427-49-6)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
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