Valsartan USP Related Compound E CAS 137863-17-3
| CAS No. | 137863-17-3 |
| Molecular Formula | C25H31N5O3 |
| Molecular Weight | 449.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Valsartan USP Related Compound E (C25H31N5O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 449.55 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).
Valsartan USP Related Compound E (CAS 137863-17-3) is a high-purity analytical reference standard with the molecular formula C25H31N5O3 and a molecular weight of 449.55 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C25H31N5O3 |
| Molecular Weight | 449.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 5 |
Related Valsartan Standards
- Valsartan Impurity 106 (CAS CATO-C4X-1057106)
- Valsartan Impurity 112 (CAS CATO-C4X-1057112)
- Valsartan Impurity 120 (CAS 137863-48-0)
- Valsartan Impurity 125 (CAS 1894176-40-9)
- Valsartan Impurity 73 (CAS CATO-C4X-105773)
- Valsartan Impurity 74 (CAS CATO-C4X-105774)
- Valsartan Impurity 75 (CAS CATO-C4X-105775)
- Valsartan Impurity 76 (CAS CATO-C4X-105776)
Recommended Standards
- CAS CATO-C3D-4200 (CAS CATO-C3D-4200)
- Valsartan Impurity 77 (CAS CATO-C4X-105777)
- ICA-121431, >98% (HPLC) (CAS 313254-51-2)
- Valsartan Impurity 78 (CAS CATO-C4X-105778)
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