Salbutamol Impurity 93 CAS 141024-79-5
| CAS No. | 141024-79-5 |
| Molecular Formula | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Salbutamol Impurity 93 (CAS 141024-79-5, C9H12O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Salbutamol Impurity 93 (C9H12O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 168.19 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).
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 | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
Related Salbutamol Standards
- Salbutamol Impurity 154 (CAS 82885-62-9)
- Salbutamol Impurity 52 (CAS 26945-93-7)
- Salbutamol Related Compound 4 (CAS 30186-16-4)
- Salbutamol Impurity 144 (CAS CATO-C4X-1176144)
- Salbutamol Impurity 145 (CAS 152880-92-7)
- Salbutamol Impurity 152 (CAS CATO-C4X-1176152)
- Salbutamol Impurity 83 (CAS CATO-C4X-117683)
- Salbutamol Impurity 89 (CAS CATO-C4X-117689)
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