Methyl 1-(3-bromophenyl)cyclobutane-1-carboxylate CAS 1820607-51-9
| CAS No. | 1820607-51-9 |
| Molecular Formula | C12H13BrO2 |
| Molecular Weight | 269.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Methyl 1-(3-bromophenyl)cyclobutane-1-carboxylate (CAS 1820607-51-9), a certified reference material (molecular formula C12H13BrO2, MW 269.13 g/mol) for analytical method development and quality control.
Structurally, Methyl 1-(3-bromophenyl)cyclobutane-1-carboxylate (C12H13BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 269.13 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C12H13BrO2 |
| Molecular Weight | 269.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Br-containing |
Related Methyl Standards
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- 1-(2-Bromophenyl)hexane-1,3-dione (CAS 1250965-01-5)
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- (4-Bromophenyl)(tetrahydro-2H-pyran-4-yl)methanone (CAS 1341292-56-5)
- 1-(2-Bromophenyl)-3-methylcyclobutane-1-carboxylic acid (CAS 1343686-53-2)
- 1-(2-Bromophenyl)cyclopentanecarboxylic Acid (CAS 143328-22-7)
Recommended Standards
- Methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole-2-carboxylate (CAS 1808928-32-6)
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