2,7-Dibromo-9,9-dioctyl-9H-9-silafluorene CAS 891182-24-4
| CAS No. | 891182-24-4 |
| Molecular Formula | C28H40Br2Si |
| Molecular Weight | 564.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 564.51 g/mol gives 2,7-Dibromo-9,9-dioctyl-9H-9-silafluorene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,7-Dibromo-9,9-dioctyl-9H-9-silafluorene (CAS 891182-24-4) is a high-purity analytical reference standard with the molecular formula C28H40Br2Si and a molecular weight of 564.51 g/mol.
Based on its molecular formula C28H40Br2Si, 2,7-Dibromo-9,9-dioctyl-9H-9-silafluorene contains bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 564.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 2,7-Dibromo-9,9-dioctyl-9H-9-silafluorene 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 | C28H40Br2Si |
| Molecular Weight | 564.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1987 |
| Halogen Content | Br-containing |
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Recommended Standards
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- Methyl 2-O-allyl-3-O-(2-3-4-6-tetra-O-acetyl-α-D-mannopyranosyl)-α-D-mannopyranoside (CAS 81555-75-1)
- Vicenin III (CAS 59914-91-9)
- Sodium 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline-3,8-disulfonate (CAS 121560-02-9)
- 2,5,6-Trimethoxynicotinaldehyde (CAS 124769-08-0)
- MEthyl 3-butoxy-4-chlorobenzoate (CAS 1820703-99-8)
- 3-Ethyl-4-(4-fluorophenyl)-1-methyl-1H-pyrazol-5-amine (CAS 956268-27-2)
- Cyclohexyl(2,7-diazaspiro[3.5]nonan-2-yl)methanone (CAS 1782522-59-1)
- N-(1-Cyanocyclohexyl)-2-(4,5-dichloro-6-oxopyridazin-1(6H)-yl)acetamide (CAS 877962-33-9)
- N,N-dimethyl-1-(pyrimidin-2-yl)-1H-tetrazol-5-amine (CAS 320415-73-4)
- 3-chloro-4-pyrrolidin-1-ylaniline,2HCl (CAS 1432026-45-3)
- 4-[(3-Fluoro-2-nitrophenoxy)methyl]-1-methylpiperidine (CAS 1233953-02-0)
- 2-(4-(Tert-butyl)phenoxy)propan-1-amine (CAS 951915-87-0)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
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