Carteolol Impurity 19 CAS CATO-C4X-228719
| CAS No. | CATO-C4X-228719 |
| Molecular Formula | C9H10BrNO2 |
| Molecular Weight | 244.09 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Carteolol Impurity 19 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.
CATO supplies Carteolol Impurity 19 (CAS CATO-C4X-228719), a pharmacopoeial impurity reference standard (molecular formula C9H10BrNO2, MW 244.09 g/mol) used for the identification and quantification of trace impurities in APIs.
Carteolol Impurity 19 (C9H10BrNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C9H10BrNO2 |
| Molecular Weight | 244.09 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Carteolol Standards
- Carteolol Impurity 20 (CAS CATO-C4X-228720)
- 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)
Recommended Standards
- 5-bromanyl-2-pyrrolidin-3-yloxy-pyrimidine 5-bromo-2-(3-pyrrolidinyloxy)pyrimidine 914347-82-3 A843913 (CAS 914347-82-3)
- Apalutamide impurity 88 (CAS 1367708-38-0)
- (3r)-3-amino-3-(3-bromophenyl)propanoic acid (R)- -(3-Bromophenyl)alanine (r)-3-(3-bromophenyl)-beta-alanine (r)-3-amino-3-(3-bromo-phenyl)-propanoic acid (r)-3-amino-3-(3-bromo-phenyl)-propionic acid (r)-3-amino-3-(3-bromophenyl)propionic acid (r)-beta-(3-bromophenyl)alanine 788153-27-5 h-d-beta-phe(3-br)-oh h-phg(3-br)-(c*ch2)oh r-3-amino-3-(3-bromo-phenyl)-propionic acid (CAS 788153-27-5)
- 2-(2-Bromo-5-fluorophenyl)pyrrolidine (CAS 1016533-55-3)
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