9,9-Diphenyl-9H-9-silafluorene CAS 5550-08-3
| CAS No. | 5550-08-3 |
| Molecular Formula | C24H18Si |
| Molecular Weight | 334.49 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 9,9-Diphenyl-9H-9-silafluorene.
9,9-Diphenyl-9H-9-silafluorene (CAS 5550-08-3), molecular formula C24H18Si and molecular weight 334.49 g/mol, is a CATO reference standard with documented purity and traceability.
9,9-Diphenyl-9H-9-silafluorene (C24H18Si) contains a polycyclic aromatic system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 9,9-Diphenyl-9H-9-silafluorene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C24H18Si |
| Molecular Weight | 334.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Diphenyl Standards
- 1-(2,5-Diphenyl-1H-pyrrol-1-yl)-3-(isopropylamino)propan-2-ol (CAS 438539-31-2)
- 1,5-Diphenyl-3-(thiophen-2-yl)pentane-1,5-dione (CAS 76115-74-7)
- 2-(2,4-Diphenyl-1,3-thiazol-5-yl)-N-(prop-2-en-1-yl)acetamide (CAS 339277-88-2)
- 3,4-Diphenyl-1-(p-tolyl)-1H-pyrrole-2-carbonitrile (CAS 102755-56-6)
- 9,9-Diphenyl-9H-xanthene (CAS 102892-77-3)
- N,9-diphenyl-9H-carbazol-2-amine (CAS 1427316-55-9)
- 5,10-Diphenyl-5,10-dihydrophenazine (CAS 3665-72-3)
- 3,3-Diphenyl-3H-naphtho[2,1-b]pyran (CAS 4222-20-2)
Recommended Standards
- 5β-PREGNAN-3α, 6α-DIOL-20-ONE (CAS 570-78-5)
- Allopregnanolone Impurity 2 (CAS 481-10-7)
- 5β-PREGNAN-3α, 17-DIOL-20-ONE (CAS 570-52-5)
- Chaetomellic Acid B Anhydride (CAS 84306-79-6)
- 3-(4-Benzyl-3-methylpiperazin-1-yl)propan-1-ol (CAS 6320-23-6)
- methyl (3aR,5aR,5bS,7aS,11aS,13aR,13bR,Z)-3-(hydroxyimino)-5a,5b,10,10,13b-pentamethyl-1,2,3,3a,4,5,5a,5b,6,7,8,9,10,11,11a,13,13a,13b-octadecahydro-7aH-cyclopenta[a]chrysene-7a-carboxylate (CAS 557766-14-0)
- (5-Bromothiophen-3-yl)(4-methylpiperidin-1-yl)methanone (CAS 1153023-06-3)
- Methyl 2-(4-formyl-2-methoxyphenoxy)isonicotinate (CAS 1415719-17-3)
- 1-(5-Chlorobenzofuran-2-yl)butan-1-amine (CAS 1270570-89-2)
- 1,3-Bis(3,4-dimethoxybenzyl)urea (CAS 852033-32-0)
- Ethyl 2-oxo-3-(quinoxalin-2-yl)propanoate (CAS 7248-83-1)
- tert-Butyl 4-Chloropyridine-2-carboxylate (CAS 220000-86-2)
- 2-(Furan-2-yl)-5-(piperidin-3-yl)-1,3,4-oxadiazole (CAS 1105189-75-0)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com