Vonoprazan Fumarate Impurity 40 CAS 881676-90-0
| CAS No. | 881676-90-0 |
| Molecular Formula | C16H12N2O3S |
| Molecular Weight | 312.34 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.
Vonoprazan Fumarate Impurity 40 (CAS 881676-90-0) is a certified pharmaceutical impurity reference standard with the molecular formula C16H12N2O3S and a molecular weight of 312.34 g/mol.
Structurally, Vonoprazan Fumarate Impurity 40 (C16H12N2O3S) 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 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 312.34 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C16H12N2O3S |
| Molecular Weight | 312.34 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Vonoprazan Standards
- Vonoprazan Impurity 272 (CAS CATO-C4X-1020272)
- Vonoprazan Fumarate Impurity 12 (CAS CATO-C4X-102012)
- Vonoprazan Impurity 4 (CAS 1807642-39-2)
- Vonoprazan Impurity 155 (CAS 403710-57-6)
- Vonoprazan Impurity 89 (CAS 1224739-02-9)
- Vonoprazan Fumarate Impurity 92 (CAS CATO-C4X-102092)
- Vonoprazan Impurity 151 (CAS CATO-C4X-1020151)
- Vonoprazan Fumarate Impurity 41 (CAS CATO-C4X-102041)
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