Rabeprazole Impurity 26 CAS 1246818-79-0
| CAS No. | 1246818-79-0 |
| Molecular Formula | C29H36N4O6S |
| Molecular Weight | 568.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Rabeprazole Impurity 26 (CAS 1246818-79-0) is a certified pharmaceutical impurity reference standard with the molecular formula C29H36N4O6S and a molecular weight of 568.68 g/mol.
Based on its molecular formula C29H36N4O6S, Rabeprazole Impurity 26 contains a steroid core, 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 568.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C29H36N4O6S |
| Molecular Weight | 568.68 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Rabeprazole Standards
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- Rabeprazole Impurity 45 (CAS CATO-C4X-112145)
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- Rabeprazole EP Impurity I (CAS 924663-37-6)
- Rabeprazole impurity 46 (CAS CATO-C4X-112146)
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Recommended Standards
- ITMN 4077 (CAS 790305-05-4)
- Ethyl 2-(trans-4-((ethyl(2-(((5-(2-(methylthio)ethoxy)pyrimidin-2-yl)amino)methyl)-4-(trifluoromethyl)phenyl)amino)methyl)cyclohexyl)acetate (CAS 1072907-44-8)
- 2-[N-(2,4-Dichloro-5-methoxyphenyl)4-chlorobenzenesulfonamido]-N-(3,5-dichlorophenyl)acetamide (CAS 338961-41-4)
- 15,16-Di-O-acetyldarutoside (CAS 1188282-02-1)
- Bumetanide Impurity 91 (CAS CATO-C4X-198691)
- Clobetasol Propionate EP Impurity J (CAS 1486466-31-2)
- Flurbiprofen impurity 121 (CAS 74648-00-3)
- 6-Chloro-N-(1-methyl-1h-pyrazol-5-yl)pyridine-3-carboxamide (CAS 1250312-35-6)
- 2,4,6-Trifluoro-3-methylphenylboronicacid (CAS 1140438-96-5)
- 6,7-Dimethyl-2,4-di(pyrrolidin-1-yl)-7H-pyrrolo[2,3-d]pyrimidine (CAS 157013-32-6)
- 2-[(3AR)-3a-methyl-5-oxo-1-[3-(trifluoromethyl)benzoyl]-octahydropyrrolo[2,3-b]pyrrol-2-yl]phenyl 3-(trifluoromethyl)benzoate (CAS 956401-90-4)
- Ethyl 5-(3-fluoro-4-methoxyphenyl)-1H-pyrazole-3-carboxylate (CAS 1326810-54-1)
- 749244-38-0 N3-PEG23-CH2CH2NH2 (CAS 749244-38-0)
- Insulin degludec (CAS 844439-96-9)
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