Finerenone Impurity 135 CAS CATO-C4X-2880135
| CAS No. | CATO-C4X-2880135 |
| Molecular Formula | C21H21N3O4 |
| Molecular Weight | 379.41 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 Finerenone Impurity 135.
Finerenone Impurity 135 (CAS CATO-C4X-2880135) is a certified pharmaceutical impurity reference standard with the molecular formula C21H21N3O4 and a molecular weight of 379.41 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Finerenone Impurity 135 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 379.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C21H21N3O4 |
| Molecular Weight | 379.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Finerenone Standards
- Finerenone Impurity 13 (CAS 1050477-45-6)
- Finerenone Impurity 158 (CAS CATO-C4X-2880158)
- Finerenone Impurity 211 (CAS CATO-C4X-2880211)
- Finerenone Impurity 212 (CAS CATO-C4X-2880212)
- Finerenone Impurity 74 (CAS 2640506-74-5)
- Finerenone (CAS 1050477-31-0)
- rac-Finerenone (CAS 1050477-27-4)
- Finerenone Impurity 174 (CAS CATO-C4X-2880174)
Recommended Standards
- Ozenoxacin Impurity 75 (CAS CATO-C4X-279675)
- Ozenoxacin Impurity 61 (CAS CATO-C4X-279661)
- Ozenoxacin Impurity 1 (CAS CATO-C4X-27961)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
- Etofenamate Impurity 2 (CAS CATO-C4X-26032)
- Lifitegrast Impurity 88 (CAS CATO-C4X-240988)
- Favipiravir Impurity 22 HCl (CAS 30250-67-0)
- 5-Bromo-6-cyclopropyl-2-oxo-1,2-dihydropyridine-3-carbonitrile (CAS 1135283-57-6)
- Octahydro-1h-inden-5-ol (CAS 3716-38-9)
- Eltrombopag impurity 147 (CAS CATO-C4X-1198147)
- 3-Benzyl-4-chloro-2-oxo-2,3-dihydro-1,3-thiazole-5-carbaldehyde (CAS 497082-20-9)
- H-p-Fluoro-Phe-OEt · HCl (CAS 1534-90-3)
- 2-(3,5-Dichlorophenyl)-2-hydroxyacetic acid (CAS 35599-94-1)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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