2,4-dichloro-5-fluoro-thieno[2,3-d]pyrimidine CAS 2659313-26-3
| CAS No. | 2659313-26-3 |
| Molecular Formula | C6H9Cl2FN2S |
| Molecular Weight | 231.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 2,4-dichloro-5-fluoro-thieno[2,3-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2,4-dichloro-5-fluoro-thieno[2,3-d]pyrimidine (CAS 2659313-26-3) is a high-purity analytical reference standard with the molecular formula C6H9Cl2FN2S and a molecular weight of 231.12 g/mol.
Owing to a nitrile group, sulfur-containing functionality, fluorine/chlorine substitution, 2,4-dichloro-5-fluoro-thieno[2,3-d]pyrimidine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 231.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C6H9Cl2FN2S |
| Molecular Weight | 231.12 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2,3-Dichloro-2,2-dimethylpropiophenone (CAS 898766-54-6)
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- 2,4-dichloro-6-fluoro-thieno[2,3-d]pyrimidine (CAS 2659313-20-7)
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- 5-tert-Butyl-2-[(4-nitrophenyl)methoxy]benzene-1,3-dicarbonitrile (CAS 320424-45-1)
- 1-(3,4-Dimethoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 886369-58-0)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com