4-Chloro-2-methyl-5-(thiophen-2-yl)thieno[2,3-d]pyrimidine CAS 243669-62-7
| CAS No. | 243669-62-7 |
| Molecular Formula | C11H7ClN2S2 |
| Molecular Weight | 266.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Chloro-2-methyl-5-(thiophen-2-yl)thieno[2,3-d]pyrimidine (CAS 243669-62-7), a certified reference material (molecular formula C11H7ClN2S2, MW 266.77 g/mol) for analytical method development and quality control.
4-Chloro-2-methyl-5-(thiophen-2-yl)thieno[2,3-d]pyrimidine (C11H7ClN2S2) 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 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.
Physical & Chemical Properties
| Molecular Formula | C11H7ClN2S2 |
| Molecular Weight | 266.77 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Chloro Standards
- 2-Chloro-N-cyclohexyl-N-ethylnicotinamide (CAS 1016760-14-7)
- n-(5-Chloro-2-methylphenyl)-2-((cyclobutylmethyl)amino)acetamide (CAS 1154379-11-9)
- 5-Chloro-N-ethyl-4-mercapto-N-methylpyridine-3-sulfonamide (CAS 1352497-00-7)
- 2-Chloro-1-(4-(2,3-dimethylphenyl)piperazin-1-yl)ethan-1-one (CAS 177489-01-9)
- (2-Chloro-6-methylpyridin-3-yl)(2-ethylpiperidin-1-yl)methanone (CAS 613660-46-1)
- 2-Chloro-1-(4-(2,5-dimethylphenyl)piperazin-1-yl)ethan-1-one (CAS 896519-69-0)
- 2-Chloro-N-(4-(piperidin-1-ylmethyl)phenyl)acetamide (CAS 856437-30-4)
- 2-Chloro-N-[4-(3-methyl-piperidin-1-yl)-phenyl]-acetamide (CAS 842974-39-4)
Recommended Standards
- 4-Chloro-2-(2,6-dimethylpiperidine-1-carbonyl)aniline (CAS 953745-28-3)
- 4-Chloro-5-(5-methylthiophen-2-yl)thieno[2,3-d]pyrimidine (CAS 885524-21-0)
- 4-Amino-2-chloro-n-cyclohexyl-n-methylbenzamide (CAS 63497-59-6)
- 6-Chloro-4-(methylsulfanyl)-8-thia-3,5-diazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2,4,6,10,12-hexaene (CAS 478077-24-6)
- 3-(2-(Methylthio)ethyl)piperidine (CAS 1248723-55-8)
- But-3-ene-1,2,3-tricarboxylic acid (CAS 26326-05-6)
- 3-Cyano-2,6-dichloro-4-trifluoromethylpyridine (CAS 13600-42-5)
- N-(3-Methanethiosulfonylpropyl) Phenothiazine (CAS 1391052-14-4)
- 1-(4-Fluoro-2-(trifluoromethyl)phenyl)cyclopropan-1-amine (CAS 1314755-22-0)
- Trimethoxy(4-phenylbutyl)silane (CAS 152958-91-3)
- 1H-PYrrolo[2,3-b]pyridine-3-sulfonic acid (4-fluoro-phenyl)-amide (CAS 1197852-65-5)
- 6-Bromo-5-(difluoromethyl)-3-methylpicolinaldehyde (CAS 1805248-24-1)
- 3-amino-1-chloro-4-phenyl-2-Butanone (CAS 25487-45-0)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
Why CATO?
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