Omeprazole impurity 32 CAS CATO-C4X-125532
| CAS No. | CATO-C4X-125532 |
| Molecular Formula | C17H18N4O4S |
| Molecular Weight | 374.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Omeprazole impurity 32 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 374.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a process- or degradation-related impurity, Omeprazole impurity 32 (CAS CATO-C4X-125532, C17H18N4O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Omeprazole impurity 32 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 | C17H18N4O4S |
| Molecular Weight | 374.41 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Omeprazole Standards
- Omeprazole acid methyl ester sulfide (CAS 120003-82-9)
- Omeprazole Impurity 33 (CAS CATO-C4X-125533)
- Omeprazole Impurity 50 (CAS CATO-C4X-125550)
- Omeprazole EP Impurity I (CAS 158812-85-2)
- Omeprazole Sulfone-D3 (CAS 1189891-71-1)
- Omeprazole Impurity 11 (CAS CATO-C4X-125511)
- Omeprazole Impurity 91 (CAS 317807-10-6)
- Omeprazole Impurity 49 (CAS 89352-76-1)
Recommended Standards
- N-Nitroso Esomeprazole impurity 142 (CAS CATO-C4X-1112142)
- Relebactam Impurity 100 (CAS 2089462-50-8)
- Esomeprazole Impurity 131 (CAS CATO-C4X-1112131)
- Relebactam Impurity 101 (CAS 2089462-51-9)
- Olopatadine lmpurity 62 (CAS CATO-C4X-171863)
- Tamoxifen Impurity 15 (CAS 157698-32-3)
- Tramadol Hydrochloride EP Impurity C (CAS 905592-54-3)
- Undecanoic acid, 11-amino-, homopolymer (CAS 25587-80-8)
- 2-(1,1-Dioxo-tetrahydro-1lambda*6*-thiophen-3-yl-amino)-propionic acid (CAS 247109-40-6)
- Heraclenol acetonide (CAS 64790-68-7)
- 1-((2,5-Dichlorophenyl)sulfonyl)-4-(2-hydroxyethyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 866040-23-5)
- [1,1'-Biphenyl]-4-yl(2-((2-chlorophenyl)amino)thiazol-5-yl)methanone (CAS 339022-36-5)
- 4-[3-(2,6-Dichlorophenyl)-5-methyl-1,2-oxazole-4-carbonyl]-N-(3-methoxypropyl)-1H-pyrrole-2-carboxamide (CAS 478064-48-1)
- Tirzepatide Impurity 49 (CAS CATO-C4X-324049)
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