Fulvestrant EP Impurity D CAS 2483797-59-5
| CAS No. | 2483797-59-5 |
| Molecular Formula | C45H64O4 |
| Molecular Weight | 668.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Fulvestrant EP Impurity D is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 668.99 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Fulvestrant EP Impurity D (CAS 2483797-59-5) is a certified pharmaceutical impurity reference standard with the molecular formula C45H64O4 and a molecular weight of 668.99 g/mol.
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.
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 | C45H64O4 |
| Molecular Weight | 668.99 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
Related Fulvestrant Standards
- Fulvestrant impurity 35 (CAS CATO-C4X-191735)
- Fulvestrant impurity 52 (CAS CATO-C4X-191752)
- Fulvestrant Impurity 12 (CAS CATO-C4X-191712)
- Fulvestrant Impurity 13 (CAS CATO-C4X-191713)
- Fulvestrant impurity 42 (CAS CATO-C4X-191742)
- Fulvestrant impurity 43 (CAS CATO-C4X-191743)
- Fulvestrant Impurity 21 (CAS 261506-24-5)
- Fulvestrant Impurity 29 (CAS CATO-C4X-191729)
Recommended Standards
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- 2-Cyclobutyl-4-methoxybutanoic acid (CAS 1706443-75-5)
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Why CATO?
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