Indobufen Impurity 10 CAS 94232-67-4
| CAS No. | 94232-67-4 |
| Molecular Formula | C18H15NO4 |
| Molecular Weight | 309.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
As a process- or degradation-related impurity, Indobufen Impurity 10 (CAS 94232-67-4, C18H15NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Indobufen Impurity 10 (C18H15NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 309.32 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C18H15NO4 |
| Molecular Weight | 309.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 1 |
Related Indobufen Standards
- Indobufen Impurity 71 (CAS CATO-C4X-179271)
- Indobufen impurity 76 (CAS CATO-C4X-179276)
- Indobufen impurity 79 (CAS CATO-C4X-179279)
- Indobufen Impurity 43 (CAS CATO-C4X-179243)
- Indobufen Impurity 9 (CAS 76553-18-9)
- Indobufen Impurity 91 (CAS CATO-C4X-179291)
- Indobufen Impurity 1 (CAS CATO-C4X-17921)
- Indobufen Impurity 40 (CAS 203313-55-7)
Recommended Standards
- Ramosetron impurity 31 (CAS CATO-C4X-118231)
- Rivaroxaban impurity 190 (CAS CATO-C4X-1090190)
- Ethyl 4-((4-hydroxy-3-nitrophenyl)amino)piperidine-1-carboxylate (CAS CATO-C3D-26180)
- Nintedanib Impurity 120 (CAS CATO-C4X-1814120)
- Telmisartan EP Impurity F (CAS 915124-86-6)
- Glipizide Impurity 14 (CAS 35303-76-5)
- Cholesterol impurity 41 (CAS 1255-88-5)
- (3S,4R)-piperidine-3,4-diol (CAS 868051-84-7)
- L-Lanthionine ketimine 5-ethylester (CAS 944115-20-2)
- tert-Butyl 2-(((2-(methylthio)pyrimidin-4-yl)amino)methyl)piperidine-1-carboxylate (CAS 1261234-08-5)
- Bcx 1470 (CAS 217099-43-9)
- (E)-2-Methyl-5-(2-nitrovinyl)thiophene (CAS 117693-20-6)
- 2-Chloro-2,2-difluoro-1-(3-fluoro-5-methylphenyl)ethan-1-one (CAS 1352225-22-9)
- Insulin Degludec Impurity 14 (CAS CATO-C4X-215714)
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