Atrasentan Impurity 193 CAS CATO-C4X-3347193
| CAS No. | CATO-C4X-3347193 |
| Molecular Formula | C31H42N2O6 |
| Molecular Weight | 538.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Atrasentan Impurity 193 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.
Atrasentan Impurity 193 (CAS CATO-C4X-3347193) is a certified pharmaceutical impurity reference standard with the molecular formula C31H42N2O6 and a molecular weight of 538.67 g/mol.
Structurally, Atrasentan Impurity 193 (C31H42N2O6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 538.67 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C31H42N2O6 |
| Molecular Weight | 538.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Atrasentan Standards
- Atrasentan Impurity 192 (CAS CATO-C4X-3347192)
- Atrasentan Impurity 194 (CAS CATO-C4X-3347194)
- Atrasentan Impurity 195 (CAS CATO-C4X-3347195)
- Atrasentan Impurity 196 (CAS CATO-C4X-3347196)
- Atrasentan Impurity 44 (CAS 223139-41-1)
- Atrasentan Impurity 118 (CAS 1059759-94-2)
- Atrasentan Impurity 119 (CAS 209214-33-5)
- Atrasentan Impurity 121 (CAS 195708-08-8)
Recommended Standards
- Ciclesonide Impurity 15 (CAS 3035286-87-1)
- Ciclesonide Impurity 12 (CAS CATO-C4X-320112)
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- Di-tert-butyl 4,7,10,13,16,19,22-heptaoxapentacosanedioate (CAS 439114-17-7)
- Cefixime Impurity 83 (CAS CATO-C4X-113983)
- Cefuroxime impurity 102 (CAS CATO-C4X-1245102)
- Urapidil Impurity 76 HBr (CAS 100939-96-6)
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- (S)-4-methyl-3-(methylamino)pentanoic acid (CAS 1628734-62-2)
- Des-Pro36-Tirzepatide (CAS CATO-CPTD788937)
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