Salbutamol Impurity 97 CAS 53942-75-9
| CAS No. | 53942-75-9 |
| Molecular Formula | C14H17NO4 |
| Molecular Weight | 263.29 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.
Salbutamol Impurity 97 (CAS 53942-75-9) is a certified pharmaceutical impurity reference standard with the molecular formula C14H17NO4 and a molecular weight of 263.29 g/mol.
Salbutamol Impurity 97 (C14H17NO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
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 | C14H17NO4 |
| Molecular Weight | 263.29 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 1 |
Related Salbutamol Standards
- Salbutamol Impurity 156 (CAS CATO-C4X-1176156)
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Recommended Standards
- Aripiprazole impurity 80 (CAS CATO-C4X-100880)
- Hydrochlorothiazide Impurity 6 (CAS 23141-82-4)
- Trimethoprim Impurity 6 (CAS 7520-69-6)
- Hydrochlorothiazide Impurity 7 (CAS CATO-C4X-11777)
- Betamethasone Impurity 34(Mixture of Diastereomers) (CAS 1249-19-0)
- Fluralaner Impurity 21 (CAS CATO-C4X-218021)
- Ezetimibe Impurity 7 (CAS CATO-C4X-10987)
- 1-(2-(Trifluoromethyl)benzyl)guanidine (CAS 14629-40-4)
- tert-Butyl 5-(aminomethyl)-7-oxo-6-oxa-2-azaspiro[3.4]octane-2-carboxylate oxalate (CAS 2138426-34-1)
- 2-Chloro-6-nitrobenzyl Alcohol (CAS 50907-57-8)
- 1-cyclopropyl-1-methylthiourea (CAS 1094883-17-6)
- 2-(2,3-Dihydro-1,4-benzodioxin-6-yl)-1,3-thiazole-4-carboxylic acid (CAS 938363-46-3)
- 4-((4-(Tert-butyl)benzyl)oxy)-3-methoxybenzaldehyde (CAS 781653-76-7)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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