7-phenyl-4H,5H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one CAS 34102-81-3
| CAS No. | 34102-81-3 |
| Molecular Formula | C11H8N4O |
| Molecular Weight | 212.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-phenyl-4H,5H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one.
7-phenyl-4H,5H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one (CAS 34102-81-3) is a high-purity analytical reference standard with the molecular formula C11H8N4O and a molecular weight of 212.21 g/mol.
Structurally, 7-phenyl-4H,5H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one (C11H8N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 212.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H8N4O |
| Molecular Weight | 212.21 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.) | 1966 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 7-Phenyl-1H-purin-6(7H)-one (CAS 62382-64-3)
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- 7-Phenyl-1H-imidazo[4,5-d]pyridazin-4(5H)-one (CAS 299166-47-5)
- 8-(Pyridin-3-yl)-9H-purin-6-amine (CAS 918537-07-2)
- Methyl 2-(piperidin-2-yl)acetate hydrochloride (CAS 24153-01-3)
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