| CAS No. | 947723-95-7 |
| Molecular Formula | C4H9N3O2 |
| Molecular Weight | 131.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 131.13 g/mol gives 2-(1H-1,2,3-triazol-5-yl)acetic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-(1H-1,2,3-triazol-5-yl)acetic acid (CAS 947723-95-7), a certified reference material (molecular formula C4H9N3O2, MW 131.13 g/mol) for analytical method development and quality control.
Based on its molecular formula C4H9N3O2, 2-(1H-1,2,3-triazol-5-yl)acetic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 131.13 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.
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.
| Molecular Formula | C4H9N3O2 |
| Molecular Weight | 131.13 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 | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |