trans-2-[2-(4-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid CAS 733740-62-0
| CAS No. | 733740-62-0 |
| Molecular Formula | C14H15BrO3 |
| Molecular Weight | 311.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
trans-2-[2-(4-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid (CAS 733740-62-0), molecular formula C14H15BrO3 and molecular weight 311.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, trans-2-[2-(4-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid (C14H15BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 311.17 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), trans-2-[2-(4-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H15BrO3 |
| Molecular Weight | 311.17 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 sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
Related trans Standards
- 1-(2-(4-Bromophenyl)acetyl)-1,4-diazepan-5-one (CAS 1355497-50-5)
- Methyl 1-(4-Bromophenyl)-4-oxocyclohexanecarboxylate (CAS 1384265-30-8)
- Methyl 1-(2-Bromophenyl)-4-oxocyclohexanecarboxylate (CAS 1385694-67-6)
- Methyl 1-(3-Bromophenyl)-4-oxocyclohexanecarboxylate (CAS 1385694-79-0)
- 4-Bromophenyl-2'-naphthyl ketone (CAS 760192-88-9)
- cis-3-[2-(2-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid (CAS 733740-39-1)
- cis-3-[2-(4-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid (CAS 733740-34-6)
- trans-2-[2-(3-Bromophenyl)-2-oxoethyl]-cyclopentane-1-carboxylic acid (CAS 733740-61-9)
Recommended Standards
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- 5-(Chlorodifluoromethyl)-2,3-dihydro-1H-1,4-diazepine (CAS 207113-13-1)
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- 1,2,3,4,5-Pentabromo-6-(2,3,5,6-tetrabromophenoxy)benzene (CAS 437701-78-5)
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- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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