(7,7-Dimethyl-7H-benzo[c]fluoren-5-yl)boronic acid CAS 1246940-13-5
| CAS No. | 1246940-13-5 |
| Molecular Formula | C19H17BO2 |
| Molecular Weight | 288.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(7,7-Dimethyl-7H-benzo[c]fluoren-5-yl)boronic acid (CAS 1246940-13-5), molecular formula C19H17BO2 and molecular weight 288.15 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (7,7-Dimethyl-7H-benzo[c]fluoren-5-yl)boronic acid (C19H17BO2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.5, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 288.15 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), (7,7-Dimethyl-7H-benzo[c]fluoren-5-yl)boronic acid 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 | C19H17BO2 |
| Molecular Weight | 288.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Dimethyl Standards
- (11,11-Dimethyl-11H-benzo[b]fluoren-2-yl)boronic acid (CAS 1198396-40-5)
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Recommended Standards
- 1-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopropane-1-carboxylic acid (CAS 1218790-98-7)
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- 2-(3,4-Dichlorobenzyl)thiazole-4-carboxylic acid (CAS 1216305-01-9)
- N-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)cyclopropanecarboxamide (CAS 1286230-87-2)
- 1',4-Dihydroxy Midazolam (1.0mg/ml in Acetonitrile) (CAS 64740-68-7)
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