Ilaprazole impurity 188 CAS CATO-C4X-1130188
| CAS No. | CATO-C4X-1130188 |
| Molecular Formula | C19H18N4O2S |
| Molecular Weight | 366.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ilaprazole impurity 188 (CAS CATO-C4X-1130188), a pharmacopoeial impurity reference standard (molecular formula C19H18N4O2S, MW 366.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Ilaprazole impurity 188 (C19H18N4O2S) contains a steroid 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).
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 | C19H18N4O2S |
| Molecular Weight | 366.44 g/mol |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ilaprazole Standards
- Ilaprazole Impurity N3 (CAS CATO-C1787280)
- Ilaprazole (CAS 172152-36-2)
- Ilaprazole Impurity 108 (CAS CATO-C4X-1130108)
- (+)-Ilaprazole (CAS 910664-01-6)
- (-)-Ilaprazole (CAS 834897-64-2)
- Ilaprazole Impurity 79 (CAS CATO-C4X-113079)
- Ilaprazole Impurity 80 (CAS CATO-C4X-113080)
- Ilaprazole Impurity 222 (CAS CATO-C4X-1130222)
Recommended Standards
- Propyl 2-amino-1-(thiophen-2-ylmethyl)-1H-pyrrolo[2,3-b]quinoxaline-3-carboxylate (CAS 848673-13-2)
- N-((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)carbamothioyl)benzamide (CAS 84555-16-8)
- Famotidine Impurity 56 (CAS CATO-C4X-139256)
- 6-Phenyl-5-[4-(thiophene-2-carbonyl)piperazin-1-yl]-2,3-dihydropyridazin-3-one (CAS 477863-58-4)
- Lifitegrast Impurity 154 (CAS CATO-C4X-2409154)
- Isavuconazole Impurity 19 (CAS CATO-C4X-123619)
- Baricitinib Impurity 89 (CAS CATO-C4X-226089)
- (1,3-Dibromopropan-2-yl)benzene (CAS 85291-68-5)
- Levonorgestrel-d7 (CAS CATO-C4X-167725)
- 2-Boc-amino-6-bromo-pyridine-4-boronic acid pinacol ester (CAS 2379560-90-2)
- MEthyl 1-(2,3-dihydro-1,4-benzodioxin-6-yl)-2,3,4,9-tetrahydro-1h-beta-carboline-3-carboxylate, HCl (CAS 1214667-39-6)
- 1-(tert-butyl) 4-ethyl 1H-pyrazole-1,4-dicarboxylate (CAS 405103-00-6)
- n-(3-Iodophenyl)thiophene-2-sulfonamide (CAS 565180-58-7)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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