Methyl 5-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-chlorobenzoate CAS 1911653-45-6
| CAS No. | 1911653-45-6 |
| Molecular Formula | C16H25ClO3Si |
| Molecular Weight | 328.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-chlorobenzoate (CAS 1911653-45-6), molecular formula C16H25ClO3Si and molecular weight 328.91 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Methyl 5-(2-((tert-butyldimethylsilyl)oxy)ethyl)-2-chlorobenzoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 328.91 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C16H25ClO3Si |
| Molecular Weight | 328.91 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
Recommended Standards
- 4,5-Dibromo-2-(trifluoromethyl)benzonitrile (CAS 1242339-25-8)
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- 6-Bromo-4-(difluoromethyl)-5-methoxynicotinic acid (CAS 1805351-77-2)
- methyl 2-(4-oxo-4,5-dihydro-1H-1,5-benzodiazepin-2-yl)acetate (CAS 91392-96-0)
- Isomebumal (1.0mg/ml in Acetonitrile) (CAS 17013-37-5)
- 1-(1-Methyl-1H-pyrazol-4-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine (CAS 1152858-36-0)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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