| CAS No. | 565198-73-4 |
| Molecular Formula | C16H16N2OS2 |
| Molecular Weight | 316.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
3-(2,4-Dimethyl-phenyl)-2-mercapto-5,6-dimethyl-3H-thieno[2,3-d]pyrimidin-4-one (CAS 565198-73-4) is a high-purity analytical reference standard with the molecular formula C16H16N2OS2 and a molecular weight of 316.44 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-(2,4-Dimethyl-phenyl)-2-mercapto-5,6-dimethyl-3H-thieno[2,3-d]pyrimidin-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 316.44 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.
As a certified reference material (CRM), 3-(2,4-Dimethyl-phenyl)-2-mercapto-5,6-dimethyl-3H-thieno[2,3-d]pyrimidin-4-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C16H16N2OS2 |
| Molecular Weight | 316.44 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 | 2 |
| Sulfur Atoms | 2 |