4-Desmethoxy-4-nitro Omeprazole Sulfide CAS 142885-91-4
| CAS No. | 142885-91-4 |
| Molecular Formula | C16H16N4O3S |
| Molecular Weight | 344.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies 4-Desmethoxy-4-nitro Omeprazole Sulfide (CAS 142885-91-4), a certified reference material (molecular formula C16H16N4O3S, MW 344.39 g/mol) for analytical method development and quality control.
Based on its molecular formula C16H16N4O3S, 4-Desmethoxy-4-nitro Omeprazole Sulfide contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.39 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).
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 | C16H16N4O3S |
| Molecular Weight | 344.39 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 |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Desmethoxy Standards
- Desmethoxy Gatifloxacin (CAS 93107-32-5)
- 4-Desmethoxy-4-bromo Trimethoprim-d3 (CAS 1346600-27-8)
- 4-Desmethoxy Omeprazole-d3 (CAS 1794759-05-9)
- 4-Desmethoxy Omeprazole-d3 Sulfide (CAS 1794938-78-5)
- 6’-Desmethoxy-6’-hydroxy Noscapine (CAS 220875-41-2)
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Recommended Standards
- Esomeprazole Impurity 129 (CAS CATO-C4X-1112129)
- Calcipotriol Impurity 39 (CAS 7691-76-1)
- Esomeprazole Impurity 128 (CAS CATO-C4X-1112128)
- Imipenem Impurity 114 (CAS CATO-C4X-1662114)
- 4-(4-Methoxybenzenesulfonyl)-3-phenyl-3,4-dihydro-2H-1,4-benzoxazine (CAS 338962-42-8)
- 2-(4-Aminophenyl)imidazo[1,2-a]pyridin-6-amine (CAS 1246471-10-2)
- N,N'-2-Boc-N,N'-bis(2-hydroxyethyl) ethylenediamine (CAS 167407-91-2)
- 1,2-Bis(bis(3,5-dimethylphenyl)phosphino)ethane (CAS 220185-35-3)
- Ethyl 2-(4-isopropylphenyl)-1H-benzo[d]imidazole-6-carboxylate (CAS 1416347-05-1)
- Ethyl 3-amino-3-(3-fluorophenyl)propanoate hydrochloride (CAS 182199-73-1)
- 4-((4-Bromo-3-fluorophenyl)sulfonyl)morpholine (CAS 1007211-20-2)
- (1R,3S)-3-[(E)-2-Chloro-2-fluorovinyl]-2,2-dimethylcyclopropanecarbonyl chloride (CAS 77789-74-3)
- (2R)-2-Amino-4-(tert-butoxy)-4-oxobutanoic acid hydrate (CAS 1955482-82-2)
- Mitogenic Pentapeptide (CAS 87173-03-3)
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