tert-Butyl 3-(bromomethyl)bicyclo[1.1.1]pentane-1-carboxylate CAS 138732-34-0
| CAS No. | 138732-34-0 |
| Molecular Formula | C11H17BrO2 |
| Molecular Weight | 261.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
tert-Butyl 3-(bromomethyl)bicyclo[1.1.1]pentane-1-carboxylate (CAS 138732-34-0) is a high-purity analytical reference standard with the molecular formula C11H17BrO2 and a molecular weight of 261.16 g/mol.
Based on its molecular formula C11H17BrO2, tert-Butyl 3-(bromomethyl)bicyclo[1.1.1]pentane-1-carboxylate contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 261.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H17BrO2 |
| Molecular Weight | 261.16 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
Recommended Standards
- 2-Bromo-4,4'-dimethyl-1,1'-biphenyl (CAS 132462-55-6)
- 1-Bromo-4-phenethylbenzene (CAS 14310-24-8)
- 5-{[3-(trifluoromethyl)-1H-pyrazol-1-yl]methyl}-1,2-oxazole-3-carboxylic acid (CAS 1306119-72-1)
- 3-Bromo-4'-ethyl-1,1'-biphenyl (CAS 1443306-09-9)
- 7-Methoxy-1-naphthalenol Acetate (CAS 150712-58-6)
- 1-(6-(Trifluoromethyl)pyridin-2-yl)piperidine-4-carboxylic acid (CAS 582325-39-1)
- 1-(4-Bromophenethyl)pyrrolidine (CAS 13734-70-8)
- 2-Amino-3-(pyridazin-3-yl)propanoic acid (CAS 89853-75-8)
- Apremilast Impurity 86 (CAS 106860-70-2)
- Tert-butyl (2-(dimethylcarbamoyl)piperidin-3-yl)carbamate (CAS 1956318-10-7)
- 5,5'-((1,2-Phenylenebis(azanediyl))bis(methaneylylidene))bis(2,2-dimethyl-1,3-dioxane-4,6-dione) (CAS 503863-91-0)
- (R)-5-Amino-5,6,7,8-tetrahydronaphthalen-2-ol (CAS 1228558-96-0)
- 3-(Pyridin-2-yl)quinazoline-2,4(1H,3H)-dione (CAS 1217-26-1)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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