Ibuprofen Sodium Salt CAS 31121-93-4
| CAS No. | 31121-93-4 |
| Molecular Formula | C13H17O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C13H17O2Na, Ibuprofen Sodium Salt contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 228.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Ibuprofen Sodium Salt (CAS 31121-93-4) is a high-purity analytical reference standard with the molecular formula C13H17O2Na and a molecular weight of 228.27 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C13H17O2 Na |
| Molecular Weight | 228.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
Related Ibuprofen Standards
- Ibuprofen Impurity 5 (CAS 100319-40-2)
- Ibuprofen EP Impurity R (CAS 102120-87-6)
- Ibuprofen Impurity 20 (CAS 10262-65-4)
- Ibuprofen Impurity 35 (CAS 103775-30-6)
- Ibuprofen impurity 127 (CAS 105959-56-6)
- Ibuprofen Methocarbamol Ester (Mixture of Diastereomers) (CAS 111632-17-8)
- Ibuprofen Impurity 42 (CAS 113403-10-4)
- Ibuprofen Acyl Glucuronide (Mixture of Diastereomers) (CAS 115075-59-7)
Recommended Standards
- Procaine N-Oxide (CAS 1027072-50-9)
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- 6-Bromopyrazine-2-carboxamide (CAS 1209459-76-6)
- 7-Bromo-1-ethyl-1,3-benzodiazole-5-carboxylic acid (CAS 1437795-17-9)
- 2'-Fluoro[1,1'-biphenyl]-3-carbonitrile (CAS 893738-69-7)
- 2-(2,5-Difluorophenyl)propanoic acid (CAS 1216110-63-2)
- N,N'-(1,3,4-Thiadiazole-2,5-diyl)bis(N-methylacetamide) (CAS 61784-94-9)
- 4,6-O-isopropylidene-d-glucal (CAS 51450-36-3)
- 4-Chloro-5,7-difluoro-2-methylquinoline (CAS 288151-41-7)
- Semaglutide impurity 50 (CAS 2773558-66-8)
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