Omeprazole Impurity 25 CAS 73590-93-9
| CAS No. | 73590-93-9 |
| Molecular Formula | C8H10ClN |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Omeprazole Impurity 25 (C8H10ClNHCl) is characterized by a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Omeprazole Impurity 25 (CAS 73590-93-9) is a certified pharmaceutical impurity reference standard with the molecular formula C8H10ClNHCl and a molecular weight of 192.08 g/mol.
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 25 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 | C8H10ClN HCl |
| Molecular Weight | 192.08 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Omeprazole Standards
- Omeprazole Impurity 45 (CAS 101341-68-8)
- Omeprazole Sulfide 5-Carboxylic Acid (CAS 103877-00-5)
- Omeprazole Impurity 7 (CAS 103877-02-7)
- Omeprazole Impurity 23 (CAS 105602-84-4)
- Omeprazole Impurity 59 (CAS 106135-28-8)
- Omeprazole Impurity 24 (CAS 109371-17-7)
- Omeprazole Impurity 22 (CAS 109371-18-8)
- Omeprazole EP Impurity B (CAS 110374-16-8)
Recommended Standards
- Orforglipron impurity 81 (CAS CATO-C4X-323481)
- Folic Acid Impurity 64 (CAS CATO-C4X-139564)
- Mirogabalin Impurity N87 (CAS 2165847-73-2)
- 4-{N-[2-(cyclohexylimino)-4-methyl-2,3-dihydro-1,3-thiazol-3-yl]carboximidoyl}benzene-1,2,3-triol (CAS 509102-00-5)
- (R)-5-(4-fluorophenyl)pyrrolidin-2-one (CAS 890853-47-1)
- 2-Bromo-6-chloro-3-methylbenzaldehyde (CAS 1114809-00-5)
- 5-Iodo-2-phenylpyrimidin-4(3H)-one (CAS 1266480-00-5)
- 4-(3-Fluoro-4-hydroxyphenyl)butan-2-one (CAS 173851-92-8)
- 158550-36-8 4-[2-(4-Benzylphenoxy)ethyl]piperidine hydrochloride 5010AD C20H26ClNO (CAS 158550-36-8)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
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