Salicylic Acid Impurity 3 CAS CATO-C4X-19023
| CAS No. | CATO-C4X-19023 |
| Molecular Formula | C12H16O6S |
| Molecular Weight | 288.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Salicylic Acid Impurity 3 (C12H16O6S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Salicylic Acid Impurity 3 (CAS CATO-C4X-19023, C12H16O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 certified reference material (CRM), Salicylic Acid Impurity 3 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.
Physical & Chemical Properties
| Molecular Formula | C12H16O6S |
| Molecular Weight | 288.32 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| Sulfur Atoms | 1 |
Related Salicylic Standards
- Salicylic Acid Impurity 20 (CAS CATO-C4X-190220)
- Salicylic Acid 2-O-β-D-Glucoside (CAS 10366-91-3)
- Salicylic Acid Acyl Glucoside (CAS 60517-74-0)
- Salicylic Acid Impurity 22 (CAS CATO-C4X-190222)
- Salicylic acid impurity 32 (CAS CATO-C4X-190232)
- Salicylic Acid Impurity 18 (CAS CATO-C4X-190218)
- Salicylic Acid Impurity 24 (CAS 83957-17-9)
- Salicylic Acid Impurity 4 (CAS CATO-C4X-19024)
Recommended Standards
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- Pramipexole Impurity 90 (CAS 106006-85-3)
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