Pantoprazole Impurity 45 CAS 1166386-02-2
| CAS No. | 1166386-02-2 |
| Molecular Formula | C15H15N3O3S |
| Molecular Weight | 317.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Pantoprazole Impurity 45 (C15H15N3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 317.36 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).
Pantoprazole Impurity 45 (CAS 1166386-02-2) is a certified pharmaceutical impurity reference standard with the molecular formula C15H15N3O3S and a molecular weight of 317.36 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.
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 | C15H15N3O3S |
| Molecular Weight | 317.36 g/mol |
| Purity | >95% |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Pantoprazole Standards
- Pantoprazole Impurity 70 (CAS CATO-C4X-139970)
- Pantoprazole Impurity 49 (CAS 1261238-06-5)
- Pantoprazole Impurity 48 (CAS CATO-C4X-139948)
- Pantoprazole Impurity 50 (CAS CATO-C4X-139950)
- Pantoprazole impurity 63 (CAS CATO-C4X-139963)
- Pantoprazole Impurity 39 (CAS CATO-C4X-139939)
- Pantoprazole EP Impurity B (CAS 102625-64-9)
- Pantoprazole Impurity 40 (CAS CATO-C4X-139940)
Recommended Standards
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- Felodipine EP Impurity B (CAS 91189-59-2)
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