Iguratimod Impurity 67 CAS CATO-C4X-182667
| CAS No. | CATO-C4X-182667 |
| Molecular Formula | C17H13N3O7S |
| Molecular Weight | 403.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 403.37 g/mol gives Iguratimod Impurity 67 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Iguratimod Impurity 67 (CAS CATO-C4X-182667) is a certified pharmaceutical impurity reference standard with the molecular formula C17H13N3O7S and a molecular weight of 403.37 g/mol.
Iguratimod Impurity 67 (C17H13N3O7S) contains a flavonoid core, an amide group, a sulfone 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 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C17H13N3O7S |
| Molecular Weight | 403.37 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 41 (CAS CATO-C4X-182641)
- Iguratimod Impurity 138 (CAS CATO-C4X-1826138)
- Iguratimod Impurity 18 (CAS CATO-C4X-182618)
- Iguratimod Impurity 46 (CAS CATO-C4X-182646)
- Iguratimod Impurity 20 (CAS 544482-14-6)
- Iguratimod Impurity 71 (CAS CATO-C4X-182671)
- Iguratimod Impurity 31 (CAS CATO-C4X-182631)
- Iguratimod Impurity 47 (CAS 149456-97-3)
Recommended Standards
- N-(9-oxo-9H-fluoren-1-yl)-4-(trifluoromethyl)benzenesulfonamide (CAS 866155-12-6)
- Lguratimod Impurity 68 (CAS CATO-C4X-182668)
- N'-(5,7-dinitroquinolin-8-yl)-4-methylbenzenesulfonohydrazide (CAS 337310-69-7)
- 2-((((9h-Fluoren-9-yl)methoxy)carbonyl)amino)terephthalic acid (CAS 1185298-22-9)
- Tiamulin EP impurity I (CAS CATO-C4X-221014)
- Ibrutinib Impurity 25 (CAS CATO-C4X-106425)
- Clopidogrel Impurity 108 (CAS CATO-C4X-1029108)
- Tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene][2-thienylmethylene]ruthenium(II) dichloride (CAS 1190427-49-6)
- Cefpodoxime Proxetil Impurity 14 (CAS CATO-C4X-157914)
- 1-[2-(Trifluoromethyl)phenyl]cyclopentanecarbonitrile (CAS 136619-38-0)
- 2-[1-(methoxymethyl)cyclopropyl]ethan-1-amine hydrochloride (CAS 1909308-78-6)
- 1-Chloro-8H-perfluorooctane (CAS 423-53-0)
- 3-(tert-Butoxy)-4-(tert-butyl)phenol (CAS 1243326-99-9)
- Peptide Impurity 05 (CAS 2322924-83-2)
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