| CAS No. | 65772-23-8 |
| Molecular Formula | C16H14N2S |
| Molecular Weight | 266.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
2-Methyl-3-(p-tolyl)quinazoline-4(3H)-thione (CAS 65772-23-8) is a high-purity analytical reference standard with the molecular formula C16H14N2S and a molecular weight of 266.36 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 2-Methyl-3-(p-tolyl)quinazoline-4(3H)-thione is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 266.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
| Molecular Formula | C16H14N2S |
| Molecular Weight | 266.36 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |