Omeprazole EP Impurity H CAS CATO-C4X-111298
| CAS No. | CATO-C4X-111298 |
| Molecular Formula | C16H16ClN3O2S |
| Molecular Weight | 349.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 349.84 g/mol gives Omeprazole EP Impurity H distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Omeprazole EP Impurity H (CAS CATO-C4X-111298) is a certified pharmaceutical impurity reference standard with the molecular formula C16H16ClN3O2S and a molecular weight of 349.84 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Omeprazole EP Impurity H is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 349.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 EP Impurity H 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 | C16H16ClN3O2S |
| Molecular Weight | 349.84 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Omeprazole Standards
- Omeprazole EP Impurity H (CAS 863029-89-4)
- Omeprazole-13C,D3 (CAS 1261395-28-1)
- 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-d (CAS 934293-91-1)
- Omeprazole Impurity 101 (CAS 1346600-70-1)
- Omeprazole Impurity 17 (CAS CATO-C4X-125517)
Recommended Standards
- Clozapine EP Impuirty C-D8 N-nitroso (CAS CATO-C4X-134018)
- N-(4-Chlorophenyl)-4-(furan-2-carbonyl)piperazine-1-carbothioamide (CAS 503132-29-4)
- tert-Butyl 4-chloro-5-methyl-3-oxo-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate (CAS 1007362-96-0)
- N-(2-((4-Chlorophenyl)amino)-2-oxoethyl)-N-methyl-2-(methylthio)nicotinamide (CAS 796066-96-1)
- Cilastatin EP Impurity G (CAS CATO-C4X-196040)
- Iodixanol Impurity 11 (CAS CATO-C4X-166311)
- Trelagliptin Impurity 54 (CAS 1261686-95-6)
- 3-Chlorobenzyl Chloride (CAS 620-20-2)
- Diethyl 5-(4-fluorophenyl)-3-hydroxy-1-methyl-1H-pyrrole-2,4-dicarboxylate (CAS 1263212-40-3)
- Ipragliflozin Impurity 15 (CAS CATO-C4X-188515)
- N,N-Dimethyl-d6-aniline (CAS 4019-61-8)
- 2-Methyl-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one (CAS 879499-48-6)
- 1H-Benzo[4,5]imidazo[2,1-c][1,2,4]triazol-3-ol (CAS 116577-81-2)
- Glucagon-like peptide 2 (CAS 89750-15-2)
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