4-(tert-Butyldimethylsilyloxy)benzaldehyde CAS 120743-99-9
| CAS No. | 120743-99-9 |
| Molecular Formula | C13H20O2Si |
| Molecular Weight | 236.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(tert-Butyldimethylsilyloxy)benzaldehyde (CAS 120743-99-9) is a high-purity analytical reference standard with the molecular formula C13H20O2Si and a molecular weight of 236.38 g/mol.
Structurally, 4-(tert-Butyldimethylsilyloxy)benzaldehyde (C13H20O2Si) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 236.38 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C13H20O2Si |
| Molecular Weight | 236.38 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related tert Standards
- 4-(tert-Butyldimethylsilyloxy)-3-methylaniline (CAS 309712-95-6)
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- 4-(TERT-BUTYLDIMETHYLSILYLOXY) CYCLOHEXANAMINE (CAS 121936-51-4)
- 2-(1-(Tert-butyldimethylsilyloxy)cyclobutyl)acetaldehyde (CAS 939411-89-9)
- 3-(tert-Butyldimethylsilyloxy)glutaric anhydride (CAS 91424-40-7)
- 5-(tert-Butyldimethylsilyloxy)-1H-indole (CAS 106792-38-5)
- 2-(t-Butyldimethylsilyloxy)methylpyridine (CAS 101192-63-6)
- 6-[(tert-Butyldimethylsilyloxy)methyl]picolinaldehyde (CAS 162084-83-5)
Recommended Standards
- 2-((tert-Butyldimethylsilyl)oxy)benzaldehyde (CAS 116585-12-7)
- 1-(4-(Methylthio)benzyl)piperidin-3-amine (CAS 1247357-88-5)
- 4-((2-(Piperidin-1-yl)ethyl)thio)aniline (CAS 1095603-02-3)
- 1-(4,5,6,7-tetrahydro-1-benzothiophen-2-ylmethyl)piperazine (CAS 1250557-86-8)
- 4-(4-Chlorophenyl)-2-[(4-methylphenyl)sulfanyl]pyrimidine (CAS 339105-97-4)
- 4-Chloro-2-methylquinazoline (CAS 6484-24-8)
- 2-Bromo-4-(difluoromethyl)-5-(trifluoromethoxy)aniline (CAS 1807186-46-4)
- 6-Deoxy-d-glucose (CAS 7658-08-4)
- 1-(1,3-Benzodioxol-5-ylmethyl)-1H-imidazole-2-thiol (CAS 1105195-60-5)
- (3-Amino-6-(benzo[d][1,3]dioxol-5-yl)-4-(trifluoromethyl)thieno[2,3-b]pyridin-2-yl)(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methanone (CAS 674804-94-5)
- Methyl 2-(Boc-amino)isonicotinate (CAS 639091-75-1)
- Tert-butyl (1-((2-aminothiazol-4-yl)methyl)piperidin-4-yl)carbamate (CAS 2174121-60-7)
- Methyl 17-bromoheptadecanoate (CAS 72338-49-9)
- Semaglutide impurity 33 (CAS CATO-C4X-222633)
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