Polymyxin Impurity 31 CAS CATO-C4X-225531
| CAS No. | CATO-C4X-225531 |
| Molecular Formula | C56H96N16O13 |
| Molecular Weight | 1201.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Polymyxin Impurity 31 (CAS CATO-C4X-225531, C56H96N16O13) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Polymyxin Impurity 31 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1201.46 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Polymyxin Impurity 31 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 | C56H96N16O13 |
| Molecular Weight | 1201.46 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 16 |
Related Polymyxin Standards
Recommended Standards
- 4,5-Diphenylisoxazole (CAS 14677-21-5)
- 4-Hydroxy-2,6-bis(tris(4-(tert-butyl)phenyl)silyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide (CAS 1155899-63-0)
- (9'Z,9''Z)-((Butylstannanetriyl)tris(sulfanediyl))tris(ethane-2,1-diyl) trioleate (CAS 67361-76-6)
- BIM-23190 (CAS 182153-96-4)
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- Prasugrel Impurity 8 (CAS 1071842-61-9)
- Trazodone impurity 77 (CAS 1799917-53-5)
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- 2-(Aminomethyl)-6-bromo-3-(difluoromethyl)-5-methoxypyridine (CAS 1805419-58-2)
- 4-Methoxybenzo[b]thiophene-3-carbaldehyde (CAS 42326-68-1)
- D-[Phe6]-Semaglutide (CAS CATO-C4X-2226213)
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