Tetrakis(3-phenylpropyl)silane CAS 18817-48-6
| CAS No. | 18817-48-6 |
| Molecular Formula | C36H44Si |
| Molecular Weight | 504.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Tetrakis(3-phenylpropyl)silane (CAS 18817-48-6), molecular formula C36H44Si and molecular weight 504.82 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Tetrakis(3-phenylpropyl)silane (C36H44Si) contains a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 504.82 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C36H44Si |
| Molecular Weight | 504.82 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | 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 |
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Recommended Standards
- Afoxolaner Impurity 15 (CAS CATO-C4X-313715)
- (E)-2-(4-chlorophenyl)-5,6,7,8-tetrahydrobenzo[d]imidazo[2,1-b]thiazole-3-carbaldehyde O-(3,4-dichlorobenzoyl) oxime (CAS 478041-90-6)
- 2-(Azido-PEG2-amido)-1,3-bis-(tert-butyldimethylsilanoxy)propane (CAS 1398044-56-8)
- 1,3,5-Tris(2,2,6,6-tetramethylpiperidin-4-yl)-1,3,5-triazinane (CAS 80458-17-9)
- [2-(Dimethylamino)ethyl]dimethylamine; dichlorocopper (CAS 20462-19-5)
- 2,2,7,7-Tetramethylcycloheptanol (CAS 105463-45-4)
- 6-Boc-amino-1H-indole (CAS 885273-73-4)
- Methyl 5-methoxy-1,2,3,4-tetrahydroisoquinoline-4-carboxylate (CAS 2091745-08-1)
- Ethyl 3-[({2-[2-(2-chlorophenoxy)acetyl]hydrazino}carbonyl)amino]propanoate (CAS 1023532-51-5)
- 5-Bromo-3-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazole (CAS 2306262-32-6)
- 3-(2-bromoacetyl)-1H-isochromen-1-one (CAS 39153-97-4)
- 5-(4-Chloro-3-nitro-benzenesulfonylamino)-2-hydroxy-benzoic acid (CAS 325732-20-5)
- 4-((1H-1,2,4-Triazol-1-yl)methyl)-2-iodoaniline (CAS 1000802-40-3)
- Fragment-[3-31]-Semaglutide (CAS CATO-C4X-2226113)
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