Salicylic acid Impurity 28 CAS 32499-37-9
| CAS No. | 32499-37-9 |
| Molecular Formula | C9H10O6S |
| Molecular Weight | 246.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Salicylic acid Impurity 28 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
As a process- or degradation-related impurity, Salicylic acid Impurity 28 (CAS 32499-37-9, C9H10O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C9H10O6S, Salicylic acid Impurity 28 contains a sulfone group, 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 246.24 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).
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 | C9H10O6S |
| Molecular Weight | 246.24 g/mol |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Sulfur Atoms | 1 |
Related Salicylic Standards
- Salicylic Acid Impurity 26 (CAS 83957-15-7)
- Salicylic Acid Impurity 21 (CAS CATO-C4X-190221)
- Salicylic acid impurity 33 (CAS CATO-C4X-190233)
- Salicylic Acid Impurity 1 (CAS 89469-32-9)
- Salicylic Acid Impurity 27 (CAS 51904-91-7)
- Salicylic Acid Impurity 23 (CAS CATO-C4X-190223)
- Salicylic Acid Impurity 34 (CAS CATO-C4X-190234)
- Salicylic Acid Impurity 19 (CAS CATO-C4X-190219)
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- 1-Benzotriazol-1-yl-3-chloropropan-2-one 305851-04-1 9656AD C9H8ClN3O (CAS 305851-04-1)
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