| CAS No. | 289-22-5 |
| Molecular Formula | Si5 |
| Molecular Weight | 140.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 140.43 g/mol gives Cyclopentasilane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Cyclopentasilane (CAS 289-22-5), a certified reference material (molecular formula Si5, MW 140.43 g/mol) for analytical method development and quality control.
Cyclopentasilane (Si5) contains an inorganic composition. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
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), Cyclopentasilane 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.
| Molecular Formula | Si5 |
| Molecular Weight | 140.43 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1957 |