Iguratimod impurity 91 HCl CAS CATO-C4X-182691
| CAS No. | CATO-C4X-182691 |
| Molecular Formula | C10H14N2O5S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 310.75 g/mol gives Iguratimod impurity 91 HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Iguratimod impurity 91 HCl (CAS CATO-C4X-182691) is a certified pharmaceutical impurity reference standard with the molecular formula C10H14N2O5SHCl and a molecular weight of 310.75 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Iguratimod impurity 91 HCl is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 310.75 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.
As a certified reference material (CRM), Iguratimod impurity 91 HCl 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 | C10H14N2O5S HCl |
| Molecular Weight | 310.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 4.0 |
| 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
- Pemafibrate Impurity 104 (2R,2'R) (CAS CATO-C4X-2903104)
- Deferasirox EP Impurity D (CAS 2254105-61-6)
- Tofacitinib Impurity 14 (CAS 1809002-40-1)
- 7-Chloro-3a-(trifluoromethyl)-3,3a-dihydrobenzo[d]pyrrolo[2,1-b]oxazol-1(2H)-one (CAS 1190209-17-6)
- 2-Cyclopropyl-4-pentyn-2-ol (CAS 6712-34-1)
- 3-Oxo-2,6-diaza-bicyclo[3.2.2]nonane-6-carboxylic acid ethyl ester (CAS 220828-11-5)
- 1,3,5-Triazine-1,3,5(2H,4H,6H)-triethanol, .alpha.1,.alpha.3,.alpha.5-trimethyl- (CAS 25254-50-6)
- 2-[4-(3-Chlorophenyl)piperazin-1-yl]-4-(4-cyclohexylphenyl)-4-oxobutanoic acid (CAS 301194-24-1)
- tert-Butyl 2-(Hydroxymethyl)-3,3-dimethylazetidine-1-carboxylate (CAS 1824536-26-6)
- Semaglutide impurity 44 (CAS CATO-C4X-222644)
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