4-Chloro-6-(pyridin-4-yl)thieno[3,2-d]pyrimidine CAS 935844-56-7
| CAS No. | 935844-56-7 |
| Molecular Formula | C11H6ClN3S |
| Molecular Weight | 247.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4-Chloro-6-(pyridin-4-yl)thieno[3,2-d]pyrimidine (CAS 935844-56-7), molecular formula C11H6ClN3S and molecular weight 247.70 g/mol, is a CATO reference standard with documented purity and traceability.
4-Chloro-6-(pyridin-4-yl)thieno[3,2-d]pyrimidine (C11H6ClN3S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H6ClN3S |
| Molecular Weight | 247.70 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- (6-Benzyl-7,8-dihydro-5H-1,6-naphthyridin-2-yl)methanamine dihydrochloride (CAS 1956382-20-9)
- 1-(1-(1H-Benzo[d][1,2,3]triazol-1-yl)ethyl)pyrrolidin-2-one (CAS 143815-29-6)
- (4-Methyl-3-(trifluoromethyl)phenyl)methanol (CAS 261952-15-2)
- 2-Methoxy-4-(3-oxomorpholino)benzaldehyde (CAS 1260762-23-9)
- 4-bromooxane-4-carbonyl chloride (CAS 1803591-91-4)
- 5-(4-Carboxyphenyl)pyrimidine-2-carboxylic acid (CAS 2137753-50-3)
- Peptide Impurity 82 (CAS 10491-78-8)
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