Fulvestrant impurity 52 CAS CATO-C4X-191752
| CAS No. | CATO-C4X-191752 |
| Molecular Formula | C33H49F5O5S2 |
| Molecular Weight | 684.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 684.86 g/mol gives Fulvestrant impurity 52 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Fulvestrant impurity 52 (CAS CATO-C4X-191752) is a certified pharmaceutical impurity reference standard with the molecular formula C33H49F5O5S2 and a molecular weight of 684.86 g/mol.
The molecular framework of Fulvestrant impurity 52 (C33H49F5O5S2) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C33H49F5O5S2 |
| Molecular Weight | 684.86 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Sulfur Atoms | 2 |
Related Fulvestrant Standards
- 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 35 (CAS CATO-C4X-191735)
- Fulvestrant EP Impurity D (CAS 2483797-59-5)
- Fulvestrant impurity 54 (CAS CATO-C4X-191754)
- Fulvestrant Impurity 21 (CAS 261506-24-5)
Recommended Standards
- Racecadotril EP Impurity H (CAS 141437-88-9)
- Di-tert-butyl(((S)-6-((S)-2-amino-3-(naphthalen-2yl)propanamido)-1-(tert-butoxy)-1-oxohexan-2-yl)carbamoyl)-L-glutamate (CAS 2367588-01-8)
- 2,3,6,7,10,11-Hexaphenyltriphenylene (CAS 836671-27-3)
- 4',4''',4''''',4'''''''-Methanetetrayltetrakis(([1,1'-biphenyl]-4-amine)) (CAS 2740557-60-0)
- Prednisolone Impurity 44 (CAS 7055-53-0)
- Atrasentan Impurity 106 (CAS 1059052-53-7)
- Benserazide impurity 51 (CAS CATO-C4X-142751)
- (E)-3-(4-bromo-3-nitrophenyl)acrylic acid (CAS 824960-82-9)
- (s)-Ethyl 2-amino-3,3-dimethylbutanoate hydrochloride (CAS 144054-74-0)
- 2-(2-Hydroxyphenyl)-2-oxoacetic acid (CAS 17392-16-4)
- 3-Bromo-4-nitrophenol (CAS 5470-65-5)
- Roxadustat Impurity 36 (CAS 2599284-47-4)
- (Z)-N'-[(3,4-Dichlorophenyl)methoxy]pyridine-3-carboximidamide (CAS 338753-72-3)
- D-Pro31-Tirzepatide (CAS CATO-CPTD788905)
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