2-Chloro-4H-cyclopenta[b]thiophen-6(5H)-one CAS 215190-58-2
| CAS No. | 215190-58-2 |
| Molecular Formula | C7H5ClOS |
| Molecular Weight | 172.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chloro-4H-cyclopenta[b]thiophen-6(5H)-one 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.
2-Chloro-4H-cyclopenta[b]thiophen-6(5H)-one (CAS 215190-58-2) is a high-purity analytical reference standard with the molecular formula C7H5ClOS and a molecular weight of 172.63 g/mol.
2-Chloro-4H-cyclopenta[b]thiophen-6(5H)-one (C7H5ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C7H5ClOS |
| Molecular Weight | 172.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2018 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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