Ibuprofen Impurity 103 CAS CATO-C4X-1082103
| CAS No. | CATO-C4X-1082103 |
| Molecular Formula | C12H16O2 |
| Molecular Weight | 192.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ibuprofen Impurity 103 (CAS CATO-C4X-1082103) is a certified pharmaceutical impurity reference standard with the molecular formula C12H16O2 and a molecular weight of 192.25 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Ibuprofen Impurity 103 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C12H16O2 |
| Molecular Weight | 192.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Ibuprofen Standards
- Ibuprofen Impurity 104 (CAS CATO-C4X-1082104)
- Ibuprofen Impurity (CAS 1314907-71-5)
- Ibuprofen impurity 132 (CAS 3585-48-6)
- Ibuprofen Impurity 22 (CAS 1977-39-5)
- Ibuprofen Impurity 80 (CAS 3585-47-5)
- Ibuprofen EP Impurity P (CAS 36039-36-8)
- Ibuprofen Impurity 52 (CAS 67381-50-4)
- Ibuprofen Impurity 92 (CAS CATO-C4X-108292)
Recommended Standards
- Isoamyl Benzoate (CAS 94-46-2)
- Benzyl 2,2-Dimethylpropanoate (CAS 2094-69-1)
- K9REG8PIWP 7775-39-5 alpha-Methylbenzyl isobutyrate 1-Phenylethyl isobutyrate Propanoic acid, 2-methyl-, 1-phenylethyl ester EINECS 231-894-2 FEMA No. 2687 Isobutyric acid, alpha-methylbenzyl ester alpha-Methylbenzyl 2-methylpropanoate Methylphenylcarbinyl isobutyrate 1-Phenyl-1-ethyl isobutyrate 1-Phenyl-1-ethyl 2-methylpropanoate Styralyl isobutyrate UNII-K9REG8PIWP (CAS 7775-39-5)
- Tricyclodecenylacetate (CAS 2500-83-6)
- Prilocaine Impurity 6 (Lidocaine Impurity 16) (CAS 39084-88-3)
- Esomeprazole Impurity 103 (CAS CATO-C4X-1112103)
- Tenofovir disoproxil Impurity 3 (CAS 52364-31-5)
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- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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