Bis(4-bromophenyl)diphenylsilane CAS 18733-91-0
| CAS No. | 18733-91-0 |
| Molecular Formula | C24H18Br2Si |
| Molecular Weight | 494.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 494.29 g/mol gives Bis(4-bromophenyl)diphenylsilane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Bis(4-bromophenyl)diphenylsilane (CAS 18733-91-0), a certified reference material (molecular formula C24H18Br2Si, MW 494.29 g/mol) for analytical method development and quality control.
The molecular framework of Bis(4-bromophenyl)diphenylsilane (C24H18Br2Si) is characterized by bromine substitution, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Bis(4-bromophenyl)diphenylsilane 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 | C24H18Br2Si |
| Molecular Weight | 494.29 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
Related Bis Standards
- Bis(4-(3-bromophenyl)piperazin-1-yl)methane (CAS 1864060-32-1)
- 5-(5-{[3-(4-Bromophenyl)-2-imino-4-oxo-1,3-thiazolidin-5-ylidene]methyl}-2-furyl)-1H-isoindole-1,3(2H)-dione (CAS 1420071-30-2)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2,3-dimethylphenyl)acetamide (CAS 477329-14-9)
- 2-((4-(4-Bromophenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-ethylphenyl)acetamide (CAS 499125-66-5)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3,4-dimethylphenyl)acetamide (CAS 477330-33-9)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-ethylphenyl)acetamide (CAS 477330-06-6)
- 2-((4,6-Bis((4-bromophenyl)amino)-1,3,5-triazin-2-yl)amino)acetic acid (CAS 62751-92-2)
- N-(2-((4-bromophenyl)sulfonyl)ethyl)-2-((4-chlorophenyl)sulfonyl)propanamide (CAS 337923-67-8)
Recommended Standards
- (3,5-Dibromophenyl)triphenylsilane (CAS 1030856-97-3)
- 3,3'-(2,7-Dibromo-9H-fluorene-9,9-diyl)bis(N,N-dimethylpropan-1-amine) (CAS 673474-73-2)
- Tedizolid phosphate disodium salt (CAS 856867-39-5)
- 3-[(3,4-Dichlorophenyl)methanesulfonyl]-4-ethyl-5-{[3-(trifluoromethyl)phenoxy]methyl}-4H-1,2,4-triazole (CAS 923676-45-3)
- (3-methyl-1-bicyclo[1.1.1]pentanyl)hydrazine (CAS 2167376-02-3)
- N-ethyl-1,5-dimethyl-1H-pyrazole-4-sulfonamide (CAS 1005907-96-9)
- Diethyl 4-bromo-1H-pyrazole-3,5-dicarboxylate (CAS 115414-01-2)
- 4-Methoxyphenol (CAS 150-76-5)
- 3,4-Bis(hydroxymethyl)furan-2,5-dione (CAS 479035-71-7)
- 2-(4-(4-(Methylthio)benzo[d]thiazol-2-yl)piperazin-1-yl)phenol (CAS 1219907-20-6)
- (S)-3-Aminoheptan-1-ol hydrochloride (CAS 1402805-31-5)
- 4,4-Dimethyl-2-pentadecyloxazol-5(4H)-one (CAS 176665-09-1)
- 3-[(3-bromophenyl)methyl]oxolane-3-carboxylic acid (CAS 1342633-06-0)
- D-Gln24-Tirzepatide (CAS CATO-CPTD788910)
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