Fulvestrant impurity 35 CAS CATO-C4X-191735
| CAS No. | CATO-C4X-191735 |
| Molecular Formula | C45H64O4 |
| Molecular Weight | 668.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Fulvestrant impurity 35 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.
CATO supplies Fulvestrant impurity 35 (CAS CATO-C4X-191735), a pharmacopoeial impurity reference standard (molecular formula C45H64O4, MW 668.99 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Fulvestrant impurity 35 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.
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 | C45H64O4 |
| Molecular Weight | 668.99 g/mol |
| Purity | 97%+ |
| 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 |
Related Fulvestrant Standards
- Fulvestrant EP Impurity D (CAS 2483797-59-5)
- 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
- 16:0 DGS (CAS 108032-13-9)
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- (Met(O)2?)-Glucagon (1-29) (human, rat, porcine) (CAS 75217-63-9)
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