8,8-Dimethyl-2-(methylsulfanyl)-6H,7H,8H,9H-[1,2,4]triazolo[1,5-a]quinazolin-6-one CAS 338403-66-0
| CAS No. | 338403-66-0 |
| Molecular Formula | C12H14N4OS |
| Molecular Weight | 262.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 8,8-Dimethyl-2-(methylsulfanyl)-6H,7H,8H,9H-[1,2,4]triazolo[1,5-a]quinazolin-6-one (C12H14N4OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 262.33 g/mol, it falls into the medium-molecular-weight range. 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).
8,8-Dimethyl-2-(methylsulfanyl)-6H,7H,8H,9H-[1,2,4]triazolo[1,5-a]quinazolin-6-one (CAS 338403-66-0) is a high-purity analytical reference standard with the molecular formula C12H14N4OS and a molecular weight of 262.33 g/mol.
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 | C12H14N4OS |
| Molecular Weight | 262.33 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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