Prednisolone Impurity 20 CAS CATO-C4X-173720
| CAS No. | CATO-C4X-173720 |
| Molecular Formula | C21H29O8P |
| Molecular Weight | 440.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Prednisolone Impurity 20 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Prednisolone Impurity 20 (CAS CATO-C4X-173720) is a certified pharmaceutical impurity reference standard with the molecular formula C21H29O8P and a molecular weight of 440.42 g/mol.
Prednisolone Impurity 20 (C21H29O8P) contains a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C21H29O8P |
| Molecular Weight | 440.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Prednisolone Standards
- Prednisolone Phosphate - API Standards (CAS 302-25-0)
- Prednisolone Impurity 21 (CAS CATO-C4X-173721)
- Prednisolone Impurity 23 (CAS CATO-C4X-173723)
- Prednisolone Impurity 24 (CAS CATO-C4X-173724)
- Prednisolone impurity 56 (CAS CATO-C4X-173756)
- Prednisolone 21-Methanesulfonate (CAS 35410-28-7)
- Prednisolone EP Impurity A Hydrochloride (CAS 393782-60-0)
- Prednisolone Impurity 31 (CAS 6677-19-6)
Recommended Standards
- Prednisone Impurity 8 (CAS CATO-C4X-16948)
- Cortisone Phosphate (CAS 508-95-2)
- 2-((4-Methoxyphenyl)amino)-1-(2-(trifluoromethyl)benzyl)-1H-benzo[d]imidazole-5-carboxamide (CAS 1092829-79-2)
- Vericiguat impurity 48 (CAS CATO-C4X-289648)
- Gadodiamide Impurity 1 (CAS 137076-43-8)
- LCZ-696 Impurity 94 (CAS 2259708-00-2（free base）)
- Isavuconazole Impurity 199 (CAS CATO-C4X-1236199)
- 1-[3-(iodomethyl)pyrrolidin-1-yl]ethanone (CAS 1353965-40-8)
- 2-ethylsulfanyl-6-fluoro-8-(1-hydroxyethyl)chromen-4-one (CAS 2715285-32-6)
- 1-(2-Fluorophenyl)-3,3-dimethoxypropan-1-one (CAS 117338-32-6)
- 1-(4-Fluorobenzyl)piperidin-4-ol (CAS 91600-10-1)
- N-Fmoc-L-Phe(4-cyclohexyl)-OH (CAS 1381801-21-3)
- (E)-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxy}({1-[5-(4-chlorophenyl)furan-2-yl]ethylidene})amine (CAS 400078-96-8)
- CBP501 Affinity Peptide trifluoroacetate salt (CAS 1351804-17-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com