4-chloro-2-ethylthieno[2,3-d]pyrimidine CAS 56844-11-2
| CAS No. | 56844-11-2 |
| Molecular Formula | C8H15ClN2S |
| Molecular Weight | 206.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 206.74 g/mol gives 4-chloro-2-ethylthieno[2,3-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-chloro-2-ethylthieno[2,3-d]pyrimidine (CAS 56844-11-2), molecular formula C8H15ClN2S and molecular weight 206.74 g/mol, is a CATO reference standard with documented purity and traceability.
4-chloro-2-ethylthieno[2,3-d]pyrimidine (C8H15ClN2S) contains a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), 4-chloro-2-ethylthieno[2,3-d]pyrimidine 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 | C8H15ClN2S |
| Molecular Weight | 206.74 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.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related chloro Standards
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Recommended Standards
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