Carteolol Impurity 20 CAS CATO-C4X-228720
| CAS No. | CATO-C4X-228720 |
| Molecular Formula | C9H8BrNO2 |
| Molecular Weight | 242.07 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Carteolol Impurity 20 (C9H8BrNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. 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 242.07 g/mol, it falls into the medium-molecular-weight range. 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).
CATO supplies Carteolol Impurity 20 (CAS CATO-C4X-228720), a pharmacopoeial impurity reference standard (molecular formula C9H8BrNO2, MW 242.07 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Carteolol Impurity 20 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H8BrNO2 |
| Molecular Weight | 242.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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 19 (CAS CATO-C4X-228719)
- Carteolol EP Impurity G (CAS 54945-72-1)
- Carteolol Impurity 22 (CAS CATO-C4X-228722)
- Carteolol EP Impurity F (CAS 2748462-60-2)
- Carteolol EP Impurity D (CAS 51781-13-6)
- Carteolol Impurity 31 (CAS CATO-C4X-228731)
- Carteolol EP Impurity C (CAS 51781-14-7)
- Carteolol EP Impurity H (CAS 62330-84-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com