Carteolol Impurity 32 CAS CATO-C4X-228732
| CAS No. | CATO-C4X-228732 |
| Molecular Formula | C9H7Br2NO2 |
| Molecular Weight | 320.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H7Br2NO2, Carteolol Impurity 32 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 320.97 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Carteolol Impurity 32 (CAS CATO-C4X-228732, C9H7Br2NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Carteolol Impurity 32 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 | C9H7Br2NO2 |
| Molecular Weight | 320.97 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Carteolol Standards
- Carteolol Impurity 34 (CAS CATO-C4X-228734)
- Carteolol Impurity 40 (CAS CATO-C4X-228740)
- Carteolol Impurity 38 (CAS CATO-C4X-228738)
- Carteolol Impurity 35 (CAS CATO-C4X-228735)
- Carteolol impurity 36 (CAS CATO-C4X-228736)
- Carteolol Impurity 15 (CAS CATO-C4X-228715)
- Carteolol Impurity 17 (CAS 51781-06-7)
- Carteolol EP Impurity H (CAS 62330-84-1)
Recommended Standards
- 4,6-Dichloro-5-iodo-2-(methylthio)pyrimidine (CAS 917895-51-3)
- 3-Bromo-2,4-dichloro-6-ethoxyquinoline (CAS 1447949-21-4)
- 3,5-DIbromo-2-methoxymethoxy-benzonitrile (CAS 2065249-97-8)
- 2-Bromo-6-(difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine (CAS 1804671-51-9)
- Naltrexone impurity 33 (CAS CATO-C4X-147533)
- Halobetasol Impurity 12 (CAS CATO-C4X-331412)
- Methylprednisolone EP Impurity D(E-Isomer) (CAS CATO-C4X-19194)
- (S)-N-Ethyl-N-(pyrrolidin-2-ylmethyl)acetamide (CAS 1354019-41-2)
- Ethyl 4-amino-3-fluoro-5-((2-methoxyethyl)amino)benzoate (CAS 2529829-40-9)
- 2-(2-Chloroethyl)-1,3-dioxolane (CAS 4362-36-1)
- 1,3-Dichloro-5-vinylbenzene (CAS 2155-42-2)
- (3-Bromophenyl)(3-fluoro-5-methylphenyl)methanone (CAS 951886-67-2)
- 2-(4-(Trifluoromethoxy)phenoxy)propanehydrazide (CAS 175204-37-2)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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