Omeprazole Impurity 56 CAS 68596-52-1
| CAS No. | 68596-52-1 |
| Molecular Formula | C9H11NO3 |
| Molecular Weight | 181.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Omeprazole Impurity 56 (CAS 68596-52-1) is a certified pharmaceutical impurity reference standard with the molecular formula C9H11NO3 and a molecular weight of 181.19 g/mol.
Based on its molecular formula C9H11NO3, Omeprazole Impurity 56 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 181.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C9H11NO3 |
| Molecular Weight | 181.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related Omeprazole Standards
- Omeprazole Impurity 49 (CAS 22094-69-5)
- Omeprazole Impurity 55 (CAS 58469-06-0)
- Omeprazole Impurity 57 (CAS 1263057-25-5)
- Omeprazole Impurity 21 (CAS CATO-C4X-125521)
- Omeprazole Impurity 60 (CAS 150054-47-0)
- Omeprazole Impurity 39 (CAS CATO-C4X-125539)
- Omeprazole Impurity 102 (CAS 5472-37-7)
- Omeprazole Impurity 23 (CAS 105602-84-4)
Recommended Standards
- Amisulpride Impurity 45 (CAS 1175090-85-3)
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- Amoxicillin Impurity 31 (CAS 43189-12-4)
- Cefadroxil Impurity 31 (CAS CATO-C4X-122431)
- Indobufen Impurity 5 (CAS CATO-C4X-17925)
- Clozapine Impurity 11 (CAS CATO-C4X-134011)
- Vitexin B-1 (CAS 357645-16-0)
- tert-Butyl (4-aminophenyl)(ethyl)carbamate (CAS 885057-41-0)
- 2-(1-Benzyl-3,5-dimethyl-1h-pyrazol-4-yl)acetic acid (CAS 32701-82-9)
- 4-(4-Chloro-3-nitrobenzyl)pyridine (CAS 540512-04-7)
- (3-(Difluoromethyl)phenyl)methanol (CAS 1309875-03-3)
- (S)-3-(2,2,2-trifluoroethoxy)pyrrolidine (CAS 1384782-51-7)
- Biotinyl-S6 Phosphate Acceptor Peptide trifluoroacetate salt (CAS 1815618-12-2)
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