Prednisone Impurity 1 CAS CATO-C4X-16941
| CAS No. | CATO-C4X-16941 |
| Molecular Formula | C21H24O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Prednisone Impurity 1 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.
CATO supplies Prednisone Impurity 1 (CAS CATO-C4X-16941), a pharmacopoeial impurity reference standard (molecular formula C21H24O5C21H26O6, MW 730.85 g/mol) used for the identification and quantification of trace impurities in APIs.
Prednisone Impurity 1 (C21H24O5C21H26O6) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C21H24O5 C21H26O6 |
| Molecular Weight | 730.85 g/mol |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Prednisone Standards
- Prednisone EP Impurity D (CAS 10184-69-7)
- Prednisone Impurity 10 (CAS 103335-31-5)
- Prednisone Impurity N56 (CAS 103466-44-0)
- Prednisone Impurity 15 (CAS 115097-56-8)
- Prednisone Impurity N297 (CAS 1249-67-8)
- Prednisone 21-Acetate (CAS 125-10-0)
- Prednisone Impurity 16 (CAS 15714-29-1)
- Prednisone Impurity 5 (CAS 215095-77-5)
Recommended Standards
- CAS 293749-58-3 (CAS 293749-58-3)
- Posaconazole Impurity 55 (CAS CATO-C4X-120855)
- Cyclobenzaprine Impurity 8 (CAS CATO-C4X-15998)
- 1311284-02-2 N'-[1-[4-(6-Dimethylamino-4-trifluoromethyl-pyridin-2-yl)Ph]-meth-(E)-ylidene]-N-Me-hydrazinecarboxylic acid ethyl ester MFCD19981268 (CAS 1311284-02-2)
- 2-[2-(6-oxo-1,6-dihydropyridazine-3-amido)-1,3-thiazol-4-yl]acetic acid (CAS 1098367-82-8)
- N-(3-Ethoxybenzyl)-2-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 1286709-49-6)
- 2-Bromo-5-methyl-4-(pyridin-3-yl)thiazole (CAS 886370-98-5)
- Methyl 4-ethoxythiophene-2-carboxylate (CAS 1707391-85-2)
- Methyl 3-(3-((2Z,5Z,8Z,11Z,14Z)-heptadeca-2,5,8,11,14-pentaen-1-yl)oxiran-2-yl)propanoate (CAS 121818-29-9)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
Why CATO?
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