Desonide Impurity 18 CAS CATO-C4X-130118
| CAS No. | CATO-C4X-130118 |
| Molecular Formula | C24H32O7 |
| Molecular Weight | 432.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Desonide Impurity 18 (CAS CATO-C4X-130118) is a certified pharmaceutical impurity reference standard with the molecular formula C24H32O7 and a molecular weight of 432.51 g/mol.
The molecular framework of Desonide Impurity 18 (C24H32O7) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
As a certified reference material (CRM), Desonide Impurity 18 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.
Physical & Chemical Properties
| Molecular Formula | C24H32O7 |
| Molecular Weight | 432.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Desonide Standards
- Desonide Impurity 10 (CAS CATO-C4X-130110)
- Desonide Impurity 17 (CAS CATO-C4X-130117)
- Desonide Impurity 16 (CAS CATO-C4X-130116)
- delta-14-Desonide (CAS 131918-67-7)
- Desonide Impurity 1(Desonide 9, 11-Epoxide) (CAS 39672-75-8)
- Desonide Impurity N2 (CAS 2672-21-1)
- Desonide Impurity 11 (CAS 25092-32-4)
- Desonide 21-Acetate (CAS 25092-25-5)
Recommended Standards
- N-Nitroso Desmethyl Diltiazem-D3 (CAS CATO-C4X-136830)
- Budesonide impurity 42 (CAS CATO-C4X-138942)
- N-Nitroso Terbutaline impurity 132 (CAS CATO-C4X-1183132)
- Eplerenone Impurity 14 (CAS CATO-C4X-163014)
- Abemaciclib Impurity 14 (CAS CATO-C4X-293714)
- Raltegravir Hydrazonic Acid Impurity (CAS CATO-C4X-26154)
- Azilsartan impurity 145 (CAS CATO-C4X-1096145)
- 2-(3-Iodophenyl)acetic Acid (CAS 1878-69-9)
- Methyl 2-(methylamino)propanoate (CAS 52060-77-2)
- Presatovir, >98% (HPLC) (CAS 1353625-73-6)
- 9-Methylbenzo[g]chrysene (CAS 13322-53-7)
- N-(4-(3-(Cyclopropylamino)-3-oxopropyl)thiazol-2-yl)-4-fluorobenzamide (CAS 1021218-75-6)
- (1R,6S)-6-(2-(2,4-dichlorobenzoyl)hydrazine-1-carbonyl)cyclohex-3-ene-1-carboxylic acid (CAS 477711-77-6)
- Glucagon (1-29) (CAS 16941-32-5)
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