Atrasentan Impurity 41 CAS 178738-93-7
| CAS No. | 178738-93-7 |
| Molecular Formula | C30H40N2O6 |
| Molecular Weight | 524.66 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C30H40N2O6, Atrasentan Impurity 41 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 524.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Atrasentan Impurity 41 (CAS 178738-93-7) is a certified pharmaceutical impurity reference standard with the molecular formula C30H40N2O6 and a molecular weight of 524.66 g/mol.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C30H40N2O6 |
| Molecular Weight | 524.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| CAS Registry Year (est.) | 2008 |
| Nitrogen Atoms | 2 |
Related Atrasentan Standards
- Atrasentan Impurity 122 (CAS 173864-35-2)
- Atrasentan Impurity 146 (CAS 1058350-25-6)
- Atrasentan Impurity 150 (CAS 1058402-39-3)
- Atrasentan Impurity 156 (CAS 1059040-11-7)
- Atrasentan Impurity 20 (CAS 1058350-30-3)
- Atrasentan Impurity 38 (CAS 178607-92-6)
- Atrasentan Impurity 39 (CAS 178738-91-5)
- Atrasentan Impurity 40 (CAS 178738-92-6)
Recommended Standards
- di-tert-Butyl 4,4'-((2-(methylthio)pyrimidine-4,6-diyl)bis(oxy))bis(piperidine-1-carboxylate) (CAS 1261231-38-2)
- (R,R)-BaryPhos (CAS 2416226-97-4)
- (S)-tert-butyl 4-(4-(2-(4-((3-fluorophenyl)amino)piperidin-1-yl)-2-oxoethyl)benzyl)-2-methylpiperazine-1-carboxylate (CAS 923565-74-6)
- (S,S)-BaryPhos (CAS 2416226-68-9)
- Ixazomib Impurity 56 (CAS CATO-C4X-126756)
- Ramelteon Impurity 31 (CAS 1204581-50-9)
- Ceritinib Impurity 41 (CAS CATO-C4X-104841)
- 3-Trimethylsilyl-2-oxazolidinone[Trimethylsilylating Reagent] (CAS 43112-38-5)
- 1-Cyclopropylhex-5-en-1-ol (CAS 857859-87-1)
- Methyl 4-(2,3-dichloropyridin-4-yl)benzoate (CAS 1160474-76-9)
- Pimozide Impurity 1 (CAS 16148-06-4)
- Erlotinib-d6 HCl (CAS 1189953-78-3)
- Sugammadex Impurity Org49095 (CAS CATO-C4X-19063)
- [Tyr0] Fibrinopeptide A, human (CAS 103226-11-5)
Why CATO?
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