Phenylephrine Impurity 61 HBr CAS 61186-06-9
| CAS No. | 61186-06-9 |
| Molecular Formula | C9H13NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Phenylephrine Impurity 61 HBr is closely related to an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Phenylephrine Impurity 61 HBr (CAS 61186-06-9) is a certified pharmaceutical impurity reference standard with the molecular formula C9H13NOHBr and a molecular weight of 232.12 g/mol.
The molecular framework of Phenylephrine Impurity 61 HBr (C9H13NOHBr) is characterized by an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C9H13NO HBr |
| Molecular Weight | 232.12 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Phenylephrine Standards
- Phenylephrine Impurity 58 (CAS 1007885-60-0)
- Phenylephrine Impurity 100 (CAS 1026633-55-5)
- Phenylephrine Related Compound G (CAS 1094089-46-9)
- Phenylephrine EP Impurity D Racemate (CAS 1159977-09-9)
- Phenylephrine Impurity 18 (Mixture of Diastereomers) (CAS 1217525-08-0)
- Phenylephrine-d3 HCl (Methyl-d3) (CAS 1217858-50-8)
- Phenylephrine-3-O-Sulfate (CAS 1242184-39-9)
- Phenylephrine 2-O-β-glucuronide, >98% (CAS 1260611-56-0)
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- Methyl (R)-3-(((benzyloxy)carbonyl)amino)-4-hydroxy-3-methylbutanoate (CAS 1802736-71-5)
- Ac-(5-31)Semaglutide (CAS CATO-C4X-2226279)
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