| CAS No. | 96121-33-4 |
| Molecular Formula | C12H11N5 |
| Molecular Weight | 225.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,7-Dimethyl-2-(pyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidine.
5,7-Dimethyl-2-(pyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 96121-33-4) is a high-purity analytical reference standard with the molecular formula C12H11N5 and a molecular weight of 225.25 g/mol.
The molecular framework of 5,7-Dimethyl-2-(pyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidine (C12H11N5) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C12H11N5 |
| Molecular Weight | 225.25 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 5 |