Omeprazole Impurity 26 CAS 142885-92-5
| CAS No. | 142885-92-5 |
| Molecular Formula | C17H19N3O3S |
| Molecular Weight | 345.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Omeprazole Impurity 26 (C17H19N3O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 345.42 g/mol, it falls into the moderately-high-molecular-weight range. 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 26 (CAS 142885-92-5, C17H19N3O3S) 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.
CATO manufactures Omeprazole Impurity 26 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H19N3O3S |
| Molecular Weight | 345.42 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Omeprazole Standards
- Omeprazole (CAS 73590-58-6)
- Omeprazole Impurity 101 (CAS 1346600-70-1)
- Omeprazole Impurity 17 (CAS CATO-C4X-125517)
- Omeprazole impurity 34 (CAS CATO-C4X-125534)
- Omeprazole-4-methoxy-d (CAS 922731-10-0)
- Omeprazole-d3 (CAS 922731-01-9)
- Omeprazole-d3 (benzimidazole-4,6,7-d3) (CAS 934293-92-2)
- Omeprazole-13C,D3 (CAS 1261395-28-1)
Recommended Standards
- N-Phenyl-3-(pyrrolidine-1-sulfonamido)benzamide (CAS 90233-67-3)
- Esomeprazole EP Impurity F (CAS 119141-89-8)
- N3,N3,N5,N5-tetramethyl-1-(naphthalen-2-ylsulfonyl)-1H-1,2,4-triazole-3,5-diamine (CAS 478032-17-6)
- EsoMeprazole (CAS 119141-88-7)
- Niflumic acid impurity 2 (CAS CATO-C4X-30852)
- Gadobutrol Impurity N1 (CAS 15351-31-2)
- Pentazocine Impurity 6 (CAS 16808-63-2)
- 6-Bromo-8-(2-(trimethylsilyl)ethoxy)imidazo[1,2-a]pyrazine (CAS 2769933-51-7)
- Big Endothelin-1 (1-39), porcine (CAS 124834-83-9)
- ethyl (Z)-icos-8-enoate (CAS 150324-18-8)
- Lercanidipine Impurity 16 (CAS CATO-C4X-136416)
- 2,6-Bis(tert-butyl)-4-(mercaptomethyl)phenol (CAS 1620-48-0)
- (S)-3-(2-Methylpyrrolidin-1-yl)aniline (CAS 1401462-28-9)
- (Ser(PO?H?)3??·???)-Tau Peptide (379-408) trifluoroacetate salt (CAS 2022956-60-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com