3-[1-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethenyl]estra-1,3,5(10)-trien-17-one CAS 2559765-38-5
| CAS No. | 2559765-38-5 |
| Molecular Formula | C26H35BO3 |
| Molecular Weight | 406.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-[1-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethenyl]estra-1,3,5(10)-trien-17-one (C26H35BO3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.5, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 406.37 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3-[1-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethenyl]estra-1,3,5(10)-trien-17-one (CAS 2559765-38-5), molecular formula C26H35BO3 and molecular weight 406.37 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-[1-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)ethenyl]estra-1,3,5(10)-trien-17-one 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.
Physical & Chemical Properties
| Molecular Formula | C26H35BO3 |
| Molecular Weight | 406.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
Related Tetramethyl Standards
- 4,4,5,5-Tetramethyl-2-(4'-(naphthalen-2-yl)-[1,1'-biphenyl]-4-yl)-1,3,2-dioxaborolane (CAS 1450898-36-8)
- 3-(2-Oxo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[cd]indol-1(2H)-yl)piperidine-2,6-dione (CAS 2767648-27-9)
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- 3,3'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,1'-biphenyl (CAS 850264-92-5)
- 4,4’-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)biphenyl (CAS 207611-87-8)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-N-(4-(trifluoromethoxy)phenyl)benzamide (CAS 1704069-18-0)
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Recommended Standards
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- 1-{4-[(3,4-dichlorobenzenesulfonyl)methyl]-4-hydroxypiperidin-1-yl}-2,2-dimethylpropan-1-one (CAS 865659-58-1)
- 6-Nitro-2-phenylindolizine (CAS 60891-76-1)
- 1,3,5-Trimethyl-4,5-dihydro-1H-pyrazole-4-carbaldehyde (CAS 402600-56-0)
- 7-Fluoro-2-[(3-methyl-2-thienyl)methylene]-3-phenyl-1-indanone (CAS 337921-29-6)
- 5-(5-Methylisoxazol-4-yl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1342959-80-1)
- Semaglutide impurity 201 (CAS CATO-C4X-2226201)
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