Fulvestrant Impurity 24 CAS CATO-C4X-191724
| CAS No. | CATO-C4X-191724 |
| Molecular Formula | C20H23BrO3 |
| Molecular Weight | 391.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Fulvestrant Impurity 24 (CAS CATO-C4X-191724), a pharmacopoeial impurity reference standard (molecular formula C20H23BrO3, MW 391.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fulvestrant Impurity 24 (C20H23BrO3) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 391.30 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Fulvestrant Impurity 24 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 | C20H23BrO3 |
| Molecular Weight | 391.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| Storage | Store at 2-8°C, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
Related Fulvestrant Standards
- Fulvestrant impurity 48 (CAS CATO-C4X-191748)
- Fulvestrant Impurity 47 (CAS 96044-45-0)
- Fulvestrant Impurity 10 (CAS 149051-24-1)
- Fulvestrant Impurity 19 (CAS CATO-C4X-191719)
- Fulvestrant impurity 41 (CAS CATO-C4X-191741)
- Fulvestrant Impurity 59 (CAS CATO-C4X-191759)
- Fulvestrant Impurity 11 (CAS 757-06-2)
- Fulvestrant impurity 40 (CAS CATO-C4X-191740)
Recommended Standards
- tert-Butyl 4-(4-bromonaphthalen-1-yl)piperazine-1-carboxylate (CAS 846033-28-1)
- Pretomanid Impurity 14 (CAS CATO-C4X-260614)
- 6-Hydroxy-2-oxo-1-phenyl-N-[4-(trifluoromethoxy)phenyl]-1,2-dihydropyrimidine-4-carboxamide (CAS 861212-13-7)
- Pretomanid Impurity 28 (CAS 2512206-85-6)
- Voriconazole Impurity 22 (CAS CATO-C4X-136622)
- Montelukast Sodium EP Impurity G (CAS 1428448-96-7)
- Morinidazole Impurity 32 (CAS CATO-C4X-219632)
- (S)-1-Cbz-pyrrolidine-3-sulfonyl Chloride (CAS 1251071-16-5)
- 40775-71-1 Pyridine, 2-[(4-bromophenyl)methoxy]- (CAS 40775-71-1)
- 2-Chloro-5-(difluoromethyl)-4-fluoro-3-nitropyridine (CAS 1806965-00-3)
- 1-Benzyl-5-(phenylthio)-1H-1,2,3-triazole-4-carboxylic acid (CAS 84158-71-4)
- 2-Methyl-1-[3-(pyridin-3-yl)-1,2,4-oxadiazol-5-yl]propan-1-amine (CAS 1036470-12-8)
- 4-(Difluoromethyl)-2-methoxy-6-(trifluoromethoxy)nicotinic acid (CAS 1806255-30-0)
- Semaglutide Impurity 180 (CAS CATO-C4X-2226180)
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