7-Chlorothieno[3,2-d]pyrimidine CAS 31492-65-6
| CAS No. | 31492-65-6 |
| Molecular Formula | C6H3ClN2S |
| Molecular Weight | 170.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
7-Chlorothieno[3,2-d]pyrimidine (CAS 31492-65-6) is a high-purity analytical reference standard with the molecular formula C6H3ClN2S and a molecular weight of 170.62 g/mol.
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system, 7-Chlorothieno[3,2-d]pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 170.62 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H3ClN2S |
| Molecular Weight | 170.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorothieno Standards
- 2-Chlorothieno[3,2-d]pyrimidine (CAS 1119280-68-0)
- 4-Chlorothieno[3,4-d]pyrimidine (CAS 1196155-02-8)
- 4-Chlorothieno[2,3-d]pyrimidine (CAS 14080-59-2)
- 4-Chlorothieno[3,2-d]pyrimidine (CAS 16269-66-2)
- 4-Chlorothieno[2,3-d]pyridazine (CAS 697-68-7)
- 7-Chlorothieno[2,3-b]pyrazine (CAS 59944-74-0)
- 7-Chlorothieno[2,3-d]pyridazine (CAS 697-71-2)
- 6-Chlorothieno[3,2-c]pyridine (CAS 1781989-24-9)
Recommended Standards
- 1-methylpyrazole-4-sulfonyl chloride 288148-34-5 4-(Chlorosulphonyl)-1-methyl-1H-pyrazole (CAS 288148-34-5)
- Tizanidine Impurity 50 (CAS CATO-C4X-144550)
- 7-Chloroisothiazolo[4,5-b]pyridine (CAS 2766230-58-2)
- 2-Chlorothiazolo[4,5-b]pyridine (CAS 152170-30-4)
- 3-(1,3-Dioxan-2-yl)-4-fluoropropiophenone (CAS 898786-02-2)
- 1-{1,4-diazaspiro[5.5]undecan-1-yl}-2,2,2-trifluoroethan-1-one hydrochloride (CAS 1955532-10-1)
- 1,2-Dibromo-4-methanesulfonylbenzene (CAS 849035-70-7)
- 4-(Benzyloxy)-2-bromo-1-methylbenzene (CAS 60710-40-9)
- n,n'-(1,4-Phenylene)dicyclopropanecarboxamide (CAS 14371-95-0)
- 2-Fluoro-1,3-bis(trifluoromethyl)benzene (CAS 887268-09-9)
- tert-butyl (2,6-dichloropyrimidin-4-yl)(isobutyl)carbamate (CAS 1067678-73-2)
- 3-(Dimethylamino)-2-methyl-1-phenylpropan-1-one hydrochloride (CAS 5400-92-0)
- Tert-butyl 4-((4-fluorophenyl)amino)piperidine-1-carboxylate (CAS 288573-56-8)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
Why CATO?
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