7-(3-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one CAS 1291487-05-2
| CAS No. | 1291487-05-2 |
| Molecular Formula | C13H9ClN2OS2 |
| Molecular Weight | 308.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
7-(3-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one (CAS 1291487-05-2) is a high-purity analytical reference standard with the molecular formula C13H9ClN2OS2 and a molecular weight of 308.81 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 7-(3-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 308.81 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C13H9ClN2OS2 |
| Molecular Weight | 308.81 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Chlorophenyl Standards
- 7-(2-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4-ol (CAS 1291486-64-0)
- 7-(4-Chlorophenyl)-2-(methylthio)thieno[3,2-d]pyrimidin-4(3H)-one (CAS 1779132-84-1)
- 2-[(3-Chlorophenyl)sulfanyl]-N-(3-cyanothiophen-2-yl)acetamide (CAS 338777-38-1)
- 2-{[4-(4-chlorophenyl)-1,3-thiazol-2-yl]methyl}-1,3-thiazol-4-ol (CAS 860651-36-1)
- 3-{[2-(4-chlorophenyl)-2-oxoethyl]sulfanyl}-5-methyl-1,2-thiazole-4-carbonitrile (CAS 343375-34-8)
- 5-(2-(4-Chlorophenyl)thiazol-4-yl)-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 198841-45-1)
- 5-(2-Chlorophenyl)-2,3-dihydro-3-methyl-2-thioxothieno[2,3-d]pyrimidin-4(1H)-one (CAS 743452-49-5)
- 6-{[(4-chlorophenyl)methyl]sulfanyl}imidazo[2,1-b][1,3]thiazole-5-carbaldehyde (CAS 339023-13-1)
Recommended Standards
- 1142214-17-2 3-Chloro-6-[4-(piperidin-1-ylcarbonyl)piperidin-1-yl]pyridazine 9447AC C15H21ClN4O (CAS 1142214-17-2)
- 1-(3-((5-Chloro-1H-indazol-3-yl)amino)propyl)piperidin-4-ol (CAS 88944-82-5)
- Clotrimazole Impurity 8 (CAS CATO-C4X-15698)
- 2-((4-Chlorobenzyl)thio)thieno[3,2-d]pyrimidin-4(3H)-one (CAS 339105-65-6)
- 2-(3-(Chloromethyl)phenyl)-2H-1,2,3-triazole (CAS 1956328-00-9)
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