Iguratimod Impurity 25 HCl CAS 150831-14-4 (free base)
| CAS No. | 150831-14-4 (free base) |
| Molecular Formula | C15H16N2O5S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Iguratimod Impurity 25 HCl (CAS 150831-14-4 (free base)) is a certified pharmaceutical impurity reference standard with the molecular formula C15H16N2O5SHCl and a molecular weight of 372.82 g/mol.
Based on its molecular formula C15H16N2O5SHCl, Iguratimod Impurity 25 HCl contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 372.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C15H16N2O5S HCl |
| Molecular Weight | 372.82 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Iguratimod Standards
- Iguratimod Impurity 9 (CAS 10298-80-3)
- Iguratimod Impurity 40 (CAS 1179354-65-4)
- Iguratimod Impurity 39 (CAS 123662-92-0)
- Iguratimod Impurity 114 (CAS 123663-48-9)
- Iguratimod (CAS 123663-49-0)
- Iguratimod Impurity 48 (CAS 123663-50-3)
- Iguratimod Impurity 112 (CAS 123664-39-1)
- Iguratimod Impurity 3 (CAS 123664-52-8)
Recommended Standards
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- N,N-Dimethyl-1H-pyrrolo[3,2-c]pyridin-6-amine (CAS 400801-88-9)
- (1-(4-Fluorophenyl)-3,5-dimethyl-1H-pyrazol-4-yl)methanamine hydrochloride (CAS 1255717-06-6)
- Ketoconazole Impurity 22 (CAS CATO-C4X-147222)
- Tetramethylbisphenol A (CAS 5613-46-7)
- tert-Butyl 6-thia-2,7-diazaspiro[3.4]octane-2-carboxylate 6,6-dioxide (CAS 2375273-36-0)
- Oseltamivir Impurity 148 (CAS 2417645-75-9)
- TRAF6 Peptide trifluoroacetate salt (CAS 852805-92-6)
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