Vonoprazan Fumarate Impurity 15 CAS 636-73-7
| CAS No. | 636-73-7 |
| Molecular Formula | C5H5NO3S |
| Molecular Weight | 159.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Vonoprazan Fumarate Impurity 15 (C5H5NO3S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Vonoprazan Fumarate Impurity 15 (CAS 636-73-7), a pharmacopoeial impurity reference standard (molecular formula C5H5NO3S, MW 159.16 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C5H5NO3S |
| Molecular Weight | 159.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Vonoprazan Standards
- Vonoprazan Impurity 153 (CAS 15103-48-7)
- Vonoprazan Impurity 154 (CAS 5402-20-0)
- Vonoprazan Impurity N3 (CAS 15177-57-8)
- Vonoprazan Impurity 10 (CAS 122453-85-4)
- Vonoprazan Impurity 36 (CAS 56448-22-7)
- Vonoprazan Fumarate Impurity 74 (CAS 4847-34-1)
- Vonoprazan Fumarate Impurity 22 (CAS 1934459-20-7)
- Vonoprazan Impurity 188 (CAS 111480-82-1)
Recommended Standards
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