5-methyl-1-[(3-methyl-1,2-oxazol-5-yl)methyl]-1H-1,2,3-triazole-4-carboxylic acid CAS 1248957-71-2
| CAS No. | 1248957-71-2 |
| Molecular Formula | C9H10N4O3 |
| Molecular Weight | 222.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-methyl-1-[(3-methyl-1,2-oxazol-5-yl)methyl]-1H-1,2,3-triazole-4-carboxylic acid (CAS 1248957-71-2) is a high-purity analytical reference standard with the molecular formula C9H10N4O3 and a molecular weight of 222.20 g/mol.
Based on its molecular formula C9H10N4O3, 5-methyl-1-[(3-methyl-1,2-oxazol-5-yl)methyl]-1H-1,2,3-triazole-4-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 222.20 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), 5-methyl-1-[(3-methyl-1,2-oxazol-5-yl)methyl]-1H-1,2,3-triazole-4-carboxylic acid 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 | C9H10N4O3 |
| Molecular Weight | 222.20 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
Recommended Standards
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