Salbutamol Impurity 133 CAS CATO-C4X-1176133
| CAS No. | CATO-C4X-1176133 |
| Molecular Formula | C14H23NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Salbutamol Impurity 133 (CAS CATO-C4X-1176133) is a certified pharmaceutical impurity reference standard with the molecular formula C14H23NO3HCl and a molecular weight of 289.80 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Salbutamol Impurity 133 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 289.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C14H23NO3 HCl |
| Molecular Weight | 289.80 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Salbutamol Standards
- Salbutamol Impurity 130 (CAS 115061-55-7)
- Salbutamol Impurity 134 (CAS 115787-50-3)
- Salbutamol Impurity 55 (CAS 115787-52-5)
- Salbutamol Impurity 85 (CAS 115787-52-5（free base）)
- Salbutamol Impurity 87 (CAS 115787-53-6)
- Salbutamol-d3 (CAS 1219798-60-3)
- Salbutamol Impurity 75 (CAS 1221726-71-1)
- Salbutamol Impurity 146 (CAS 124658-76-0)
Recommended Standards
- Fluticasone Propionate EP Impurity K (CAS CATO-C4X-165044)
- Benzhexol Impurity 2 (CAS CATO-C4X-18572)
- Umeclidinium impurity 25 (CAS 22766-68-3)
- 2-(4-Hydroxyphenyl)propionic acid (CAS 938-96-5)
- 3-(Bromomethyl)-1,2-benzisoxazole (CAS 37924-85-9)
- N1-Isopropyl-N4,N4-dimethylcyclohexane-1,4-diamine (CAS 1353953-19-1)
- 3-Hydroxy-2,4,4-trimethylpentanoic acid (CAS 82545-49-1)
- 4-Bromo-N1-(tert-butyl)-5-methoxybenzene-1,2-diamine (CAS 1373232-55-3)
- Ethyl 3-(6-Bromo-3-pyridinyl)-3-oxopropanoate (CAS 916791-37-2)
- Semaglutide Impurity 161 (x TFA Salt) (CAS CATO-C4X-2226161)
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