Sodium aminosalicylate Impurity 5 CAS 15540-79-1
| CAS No. | 15540-79-1 |
| Molecular Formula | C8H7NO5 |
| Molecular Weight | 197.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Sodium aminosalicylate Impurity 5.
CATO supplies Sodium aminosalicylate Impurity 5 (CAS 15540-79-1), a pharmacopoeial impurity reference standard (molecular formula C8H7NO5, MW 197.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Sodium aminosalicylate Impurity 5 (C8H7NO5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 197.14 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Sodium aminosalicylate Impurity 5 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 | C8H7NO5 |
| Molecular Weight | 197.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Sodium Standards
- Phenyl 4-Aminosalicylate (CAS 133-11-9)
- Sodium aminosalicylate Impurity 4 (CAS 17540-51-1)
- Sodium aminosalicylate EP Impurity A(Mesalazine EP Impurity B) (CAS 591-27-5)
- Calcium 4-aminosalicylate Heptahydrate (CAS 133-15-3)
- Sodium Aminosalicylate Dihydrate (CAS 6018-19-5)
- Sodium aminosalicylate (CAS 8031-28-5)
Recommended Standards
- Pomalidomide Impurity 62 (CAS CATO-C4X-135462)
- Entacapone Impurity 25 (CAS 6635-20-7)
- Mesalazine Impurity 24 (CAS 859964-08-2)
- Entacapone Impurity 28 (CAS 2450-26-2)
- zanubrutinib Impurity 5 (CAS CATO-C4X-21015)
- Sildenafil Impurity 54 (CAS 133261-07-1)
- Tiotropium Bromide Impurity 20 (CAS 1459721-06-2)
- 2-((Dimethylamino)methyl)benzenesulfonamide (CAS 1094713-95-7)
- (4-Fluoro-1H-indol-7-yl)methanol (CAS 1167056-51-0)
- Penehyclidine Impurity 17 (CAS CATO-C4X-130417)
- 1-(Difluoromethyl)-3,5-dimethyl-1h-pyrazol-4-amine (CAS 1005633-15-7)
- N,N-diallyl-2-(2,5-dimethyl-1-(4-nitrophenyl)-1H-pyrrol-3-yl)-2-oxoacetamide (CAS 633318-59-9)
- 2-Chloro-N-(2-chloro-3-fluoropyridin-4-yl)-6-fluorobenzamide (CAS 1365991-97-4)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
Why CATO?
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