Pranoprofen Impurity 28 CAS CATO-C4X-181128
| CAS No. | CATO-C4X-181128 |
| Molecular Formula | C15H13NO5 |
| Molecular Weight | 287.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Pranoprofen Impurity 28 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.
Pranoprofen Impurity 28 (CAS CATO-C4X-181128) is a certified pharmaceutical impurity reference standard with the molecular formula C15H13NO5 and a molecular weight of 287.27 g/mol.
The molecular framework of Pranoprofen Impurity 28 (C15H13NO5) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C15H13NO5 |
| Molecular Weight | 287.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| Storage | Store at 2-8°C, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Pranoprofen Standards
- Pranoprofen Impurity 51 (CAS CATO-C4X-181151)
- Pranoprofen Impurity 71 (CAS CATO-C4X-181171)
- Pranoprofen Impurity 18 (CAS CATO-C4X-181118)
- Pranoprofen Impurity 83 (CAS CATO-C4X-181183)
- Pranoprofen Impurity 57 (CAS CATO-C4X-181157)
- Pranoprofen Impurity 17 (CAS CATO-C4X-181117)
- Pranoprofen Impurity 64 (CAS CATO-C4X-181164)
- Pranoprofen Impurity 68 (CAS CATO-C4X-181168)
Recommended Standards
- Eltrombopag Impurity 81 (CAS CATO-C4X-119881)
- CAS 444287-40-5 (CAS 444287-40-5)
- tert-Butyl 2-(2-((2,5-dioxopyrrolidin-1-yl)oxy)-2-oxoethoxy)acetate (CAS 2762440-46-8)
- Lenalidomide Impurity 5 (CAS 2197414-56-3)
- Dexrazoxane Impurity 17 (CAS CATO-C4X-202017)
- Landiolol Impurity 39 (CAS CATO-C4X-262139)
- Atorvastatin Impurity 146 (CAS CATO-C4X-1132146)
- Methyl 2-(1-amino-4-(tert-butyl)cyclohexyl)acetate (CAS 1510656-02-6)
- Clethodim Sulfoxide (CAS 111031-14-2)
- 1-(1-Benzylpyrrolidin-2-yl)propan-2-one (CAS 135108-27-9)
- 1-Phenylbut-3-en-2-amine (CAS 4732-10-9)
- tert-Butyl (2-chloro-5-methylpyridin-4-yl)carbamate (CAS 1820717-60-9)
- 1-(1H-pyrazole-3-sulfonyl)piperazine hydrobromide (CAS 1795338-17-8)
- Semaglutide impurity 01 (CAS 1998701-31-7)
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