Estradiol Benzoate EP Impurity B CAS CATO-C4X-35511
| CAS No. | CATO-C4X-35511 |
| Molecular Formula | C26H30O3 |
| Molecular Weight | 390.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Estradiol Benzoate EP Impurity B meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
As a process- or degradation-related impurity, Estradiol Benzoate EP Impurity B (CAS CATO-C4X-35511, C26H30O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C26H30O3, Estradiol Benzoate EP Impurity B contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 390.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C26H30O3 |
| Molecular Weight | 390.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Estradiol Standards
- Estradiol Valerate Impurity 11 (CAS CATO-C4X-284211)
- Estradiol Impurity 47 (CAS CATO-C4X-163647)
- Estradiol Enanthate (CAS 4956-37-0)
- 17-Beta-Estradiol 3,17-Dipropionate (CAS 113-38-2)
- β-Estradiol 17-Cypionate (CAS 313-06-4)
- Estradiol Hexahydrobenzoate (CAS 15140-27-9)
- Estradiol impurity 48 (CAS 95960-05-7)
- Estradiol Impurity 18 (CAS 63042-22-8)
Recommended Standards
- Treprostinil Impurity 3 (CAS CATO-C4X-21163)
- Periplogenin (CAS 514-39-6)
- (-)-Treprostinil (CAS 112421-28-0)
- Tussilagone (CAS 104012-37-5)
- Glutathione EP Impurity A (CAS 19246-18-5)
- Avatrombopag Impurity 16 (CAS CATO-C4X-223416)
- Mirogabalin Impurity 91 (CAS CATO-C4X-292491)
- 6-Isopropyl-7-methylquinolin-2-amine (CAS 791595-92-1)
- N-(4-Hydroxy)benzyl O-tert-Butyldimethylsilyl Ractopamine (CAS 1797883-87-4)
- N2,4-Dimethyl-4,5-dihydro-1H-imidazole-1,2-diamine (CAS 738568-41-7)
- N-(4-Fluorobenzyl)-2-(5-(hydroxymethyl)-2-(phenethylthio)-1H-imidazol-1-yl)acetamide (CAS 921505-21-7)
- Ethyl 2-(3,5-dichlorophenyl)acetate (CAS 200214-60-4)
- 1-METHYL-5-NITRO-1H-BENZO[D]IMIDAZOLE HCL (CAS 1951444-58-8)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
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