Iguratimod Impurity 4 CAS 84594-95-6
| CAS No. | 84594-95-6 |
| Molecular Formula | C13H11NO4 |
| Molecular Weight | 245.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Iguratimod Impurity 4 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Iguratimod Impurity 4 (CAS 84594-95-6, C13H11NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Iguratimod Impurity 4 (C13H11NO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Iguratimod Impurity 4 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 | C13H11NO4 |
| Molecular Weight | 245.23 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 136 (CAS CATO-C4X-1826136)
- Iguratimod Impurity 145 (CAS CATO-C4X-1826145)
- Iguratimod Impurity 52 (CAS 82780-78-7)
- Iguratimod Impurity 87 (CAS CATO-C4X-182687)
- Iguratimod Impurity 86 (CAS CATO-C4X-182686)
- Iguratimod Impurity 37 (CAS 1340086-28-3)
- Iguratimod Impurity 115 (CAS CATO-C4X-1826115)
- Iguratimod Impurity 126 (CAS CATO-C4X-1826126)
Recommended Standards
- Uridine Impurity 5 (CAS CATO-C4X-23345)
- Eltrombopag Impurity 53 (CAS CATO-C4X-119853)
- Finerenone Impurity 106 (CAS CATO-C4X-2880106)
- Ilaprazole Impurity 175 (CAS CATO-C4X-1130175)
- Isoniazid Impurity 4 (CAS 1452-63-7)
- Lamivudine Impurity 1 (CAS 1235712-40-9)
- Vasopressin Impurity 6 (CAS CATO-C4X-23656)
- 2-(3-Chlorophenyl)isonicotinic acid (CAS 1207725-71-0)
- Azepan-1-yl(4-(4-methoxyphenyl)piperazin-1-yl)methanone (CAS 927640-70-8)
- 2-((4-Chlorophenyl)thio)-N-(5,6-dihydrobenzo[h]quinazolin-2-yl)acetamide (CAS 338959-76-5)
- 2,6-Difluoro-4-methylbenzamide (CAS 1803825-31-1)
- Flumiclorac (free acid) (CAS 87547-04-4)
- 3,5-Dimethylpyrazine-2-carboxylic acid (CAS 946493-27-2)
- Insulin Degludec Impurity 13 (CAS CATO-C4X-215713)
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