Pantoprazole impurity 59 CAS CATO-C4X-139959
| CAS No. | CATO-C4X-139959 |
| Molecular Formula | C16H14F2N4O4S |
| Molecular Weight | 396.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Pantoprazole impurity 59 (CAS CATO-C4X-139959) is a certified pharmaceutical impurity reference standard with the molecular formula C16H14F2N4O4S and a molecular weight of 396.37 g/mol.
Structurally, Pantoprazole impurity 59 (C16H14F2N4O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 396.37 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
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 | C16H14F2N4O4S |
| Molecular Weight | 396.37 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Pantoprazole Standards
- Pantoprazole EP Impurity D (CAS 624742-53-6)
- Pantoprazole EP Impurity F (CAS 721924-06-7)
- Pantoprazole EP Impurity A (CAS 127780-16-9)
- Pantoprazole Impurity 5 (CAS 953787-60-5)
- Pantoprazole-d6 (CAS 922727-65-9)
- Pantoprazole Impurity 32 (CAS CATO-C4X-139932)
- Pantoprazole Isomer(R) Impurity (CAS 142706-18-1)
- Pantoprazole (CAS 102625-70-7)
Recommended Standards
- 298225-03-3 4-Azido-2,3,5,6-tetrafluoro-N-[3-(trimethoxysilyl)propyl]benzamide N-(3-Trimethoxysilylpropyl)-4-azido-2,3,5,6-tetrafluorobenzamide 90% PFPA-silane (CAS 298225-03-3)
- Upadacitinib Impurity 112 (CAS CATO-C4X-2405112)
- N-(2,4-dimethoxyphenyl)-N-((2-nitrophenyl)sulfonyl)glycine (CAS 357389-73-2)
- Upadacitinib Impurity 19 (CAS CATO-C4X-240519)
- Isoprenaline Impurity 23 HCl (CAS 13725-13-8(free base))
- Etrasimod Impurity 39 (CAS 2863533-38-2)
- Dopamine Impurity 5 (CAS 2815-67-0)
- Methyl 3-(4-bromophenyl)pyrazole-4-carboxylate (CAS 1150163-77-1)
- 3,3-Dimethyl-2,4-dioxaspiro[5.5]undecan-9-one (CAS 73542-51-5)
- 1-(1-(4-Chlorophenyl)-1H-1,2,4-triazol-3-yl)ethanone (CAS 61698-28-0)
- 5-Bromo-2-isobutoxypyridine (CAS 1251385-87-1)
- 1,2-Dihydroxynaphthalene (CAS 574-00-5)
- 1-((1-Methyl-1h-pyrazol-4-yl)methyl)piperidin-4-amine (CAS 1019005-61-8)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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