7H-Cyclopenta[1,2-b:4,3-b']dithiophen-7-one CAS 25796-72-9
| CAS No. | 25796-72-9 |
| Molecular Formula | C9H4OS2 |
| Molecular Weight | 192.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7H-Cyclopenta[1,2-b:4,3-b']dithiophen-7-one.
7H-Cyclopenta[1,2-b:4,3-b']dithiophen-7-one (CAS 25796-72-9) is a high-purity analytical reference standard with the molecular formula C9H4OS2 and a molecular weight of 192.26 g/mol.
7H-Cyclopenta[1,2-b:4,3-b']dithiophen-7-one (C9H4OS2) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 7H-Cyclopenta[1,2-b:4,3-b']dithiophen-7-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.
Physical & Chemical Properties
| Molecular Formula | C9H4OS2 |
| Molecular Weight | 192.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Sulfur Atoms | 2 |
Related H Standards
- 4H-Cyclopenta[1,2-b:5,4-b']dithiophen-4-one (CAS 25796-77-4)
- 4H-Cyclopenta[2,1-b:3,4-c']dithiophen-4-one (CAS 25796-80-9)
- 7H-Cyclopenta[1,2-b:3,4-b']dithiophen-7-one (CAS 25796-83-2)
- 7H-Cyclopenta[1,2-b:3,4-c']dithiophen-7-one (CAS 25959-73-3)
- 7H-Cyclopenta[1,2-c:3,4-c']dithiophen-7-one (CAS 25796-78-5)
- 1H-Cyclopenta[b]imidazo[4,5-g]indole (CAS 105790-42-9)
- Di(cyclopenta-1,3-dien-1-yl)dimethylsilane (CAS 18053-74-2)
- 1H-Cyclopenta[b]naphthalene-1,3(2H)-dione (CAS 22734-61-8)
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