Granisetron EP Impurity B CAS 107007-95-4
| CAS No. | 107007-95-4 |
| Molecular Formula | C17H22N4O |
| Molecular Weight | 298.38 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.
Granisetron EP Impurity B (CAS 107007-95-4) is a certified pharmaceutical impurity reference standard with the molecular formula C17H22N4O and a molecular weight of 298.38 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Granisetron EP Impurity B is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 298.38 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C17H22N4O |
| Molecular Weight | 298.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Granisetron Standards
- Granisetron Impurity 24 (CAS CATO-C4X-197024)
- Granisetron EP Impurity C (CAS 160177-67-3)
- Granisetron EP Impurity A (CAS 127472-42-8)
- Granisetron (CAS 109889-09-0)
- Granisetron-d3 (CAS 1224925-76-1)
- Granisetron Impurity 14 (CAS CATO-C4X-197014)
- Granisetron Impurity 19 (CAS CATO-C4X-197019)
- Granisetron Impurity 21 (CAS CATO-C4X-197021)
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