Fulvestrant Impurity 12 CAS CATO-C4X-191712
| CAS No. | CATO-C4X-191712 |
| Molecular Formula | C32H46BrF5O3S |
| Molecular Weight | 685.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Fulvestrant Impurity 12 (CAS CATO-C4X-191712) is a certified pharmaceutical impurity reference standard with the molecular formula C32H46BrF5O3S and a molecular weight of 685.67 g/mol.
Based on its molecular formula C32H46BrF5O3S, Fulvestrant Impurity 12 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 685.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures Fulvestrant Impurity 12 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C32H46BrF5O3S |
| Molecular Weight | 685.67 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; 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/Br-containing |
| Sulfur Atoms | 1 |
Related Fulvestrant Standards
- Fulvestrant Impurity 13 (CAS CATO-C4X-191713)
- Fulvestrant impurity 42 (CAS CATO-C4X-191742)
- Fulvestrant impurity 43 (CAS CATO-C4X-191743)
- Fulvestrant impurity 52 (CAS CATO-C4X-191752)
- 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)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com