Indobufen Impurity 81 CAS CATO-C4X-179281
| CAS No. | CATO-C4X-179281 |
| Molecular Formula | C15H15NO4 |
| Molecular Weight | 273.28 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 Indobufen Impurity 81.
Indobufen Impurity 81 (CAS CATO-C4X-179281) is a certified pharmaceutical impurity reference standard with the molecular formula C15H15NO4 and a molecular weight of 273.28 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Indobufen Impurity 81 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
As a certified reference material (CRM), Indobufen Impurity 81 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 | C15H15NO4 |
| Molecular Weight | 273.28 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 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 |
| Nitrogen Atoms | 1 |
Related Indobufen Standards
- Indobufen Impurity 42 (CAS CATO-C4X-179242)
- Indobufen Impurity 80 (CAS CATO-C4X-179280)
- Indobufen Impurity 50 (CAS CATO-C4X-179250)
- Indobufen Impurity 12 (CAS CATO-C4X-179212)
- Indobufen Impurity 6 (CAS 3087670-52-5)
- Indobufen Impurity N37 (CAS 950740-00-8)
- Indobufen impurity 77 (CAS CATO-C4X-179277)
- Indobufen (CAS 63610-08-2)
Recommended Standards
- Ketorolac Impurity 58 (CAS CATO-C4X-166958)
- Pranoprofen Impurity 32 (CAS CATO-C4X-181132)
- Ketorolac Impurity 57 (CAS CATO-C4X-166957)
- Rimegepant Impurity 27 (CAS CATO-C4X-248727)
- Sildenafil Impurity 287 (CAS CATO-C4X-1128287)
- Megestrol acetate EP Impurity G (CAS 1259198-59-8)
- Aprepitant Impurity 77 (CAS CATO-C4X-114177)
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- Ruthenium, dichlorobis(1,2-ethanediamine-N,N')-, chloride (CAS 41509-67-5)
- 1-(2-azidoethyl)-1H-1,3-benzodiazole (CAS 1247135-06-3)
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- N1-[2-[Boc(methyl)amino]ethyl]-5-fluoro-N1-methyl-1,2-benzenediamine (CAS 2097165-02-9)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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