4-chlorothieno[2,3-d]pyrimidine-2-carboxylic acid CAS 1934817-82-9
| CAS No. | 1934817-82-9 |
| Molecular Formula | C7H11ClN2O2S |
| Molecular Weight | 222.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H11ClN2O2S, 4-chlorothieno[2,3-d]pyrimidine-2-carboxylic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 222.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 4-chlorothieno[2,3-d]pyrimidine-2-carboxylic acid (CAS 1934817-82-9), a certified reference material (molecular formula C7H11ClN2O2S, MW 222.69 g/mol) for analytical method development and quality control.
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), 4-chlorothieno[2,3-d]pyrimidine-2-carboxylic acid 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.
Physical & Chemical Properties
| Molecular Formula | C7H11ClN2O2S |
| Molecular Weight | 222.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related chlorothieno Standards
- 4-chlorothieno[3,2-d]pyrimidine-7-carboxylic acid (CAS 1269667-57-3)
- 2-chlorothieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 1504800-73-0)
- 4-chlorothieno[2,3-d]pyrimidine-5-carboxylic acid (CAS 2090335-66-1)
- 4-chlorothieno[3,2-c]pyridine-2-carboxylic acid (CAS 1360891-68-4)
- 7-chlorothieno[2,3-c]pyridine-4-carboxylic acid (CAS 1360959-24-5)
- 6-chlorothieno[2,3-b]pyridine-2-carboxylic acid (CAS 1536794-94-1)
- 4-chlorothieno[3,2-c]pyridine-7-carboxylic acid (CAS 55040-48-7)
- 7-chlorothieno[3,2-b]pyridine-2-carboxylic acid (CAS 596793-57-6)
Recommended Standards
- 2-Chloro-4-(phenylsulfanyl)pyrimidine (CAS 191729-21-2)
- (3-Chlorophenyl)(thiophen-3-yl)methanone (CAS 896618-55-6)
- 4-Thien-2-ylbenzoyl chloride (CAS 181132-70-7)
- (4-Chlorophenyl)(thiophen-2-yl)methanone (CAS 4153-45-1)
- 3-{1-[4-(difluoromethoxy)phenyl]-2,5-dimethyl-1H-pyrrol-3-yl}-3-oxopropanenitrile (CAS 565166-94-1)
- 3-(2-Thienyl)acrylic Acid (CAS 1124-65-8)
- Ethyl 4-amino-1-methylpiperidine-4-carboxylate (CAS 141652-75-7)
- 5-(2-Methyl-5-nitrophenyl)furan-2-carbothioamide (CAS 1354749-12-4)
- Z-D-Phe-Pro-OH (CAS 17460-56-9)
- 1-Methoxy-4-(4-methylpent-4-en-1-yl)benzene (CAS 74672-06-3)
- tert-Butyl (trans-4-((dimethylamino)methyl)cyclohexyl)carbamate (CAS 864689-69-0)
- Methyl 2-[4-(3-methylphenyl)phenyl]acetate (CAS 1820684-14-7)
- (E)-4-(tridec-1-en-1-yl)benzoic acid (CAS 339014-52-7)
- Semaglutide Impurity 122 (CAS CATO-C4X-2226122)
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