9,9'-Spirobi[fluoren]-3-ylboronic acid CAS 1421789-04-9
| CAS No. | 1421789-04-9 |
| Molecular Formula | C25H17BO2 |
| Molecular Weight | 360.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 9,9'-Spirobi[fluoren]-3-ylboronic 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.
9,9'-Spirobi[fluoren]-3-ylboronic acid (CAS 1421789-04-9) is a high-purity analytical reference standard with the molecular formula C25H17BO2 and a molecular weight of 360.21 g/mol.
The molecular framework of 9,9'-Spirobi[fluoren]-3-ylboronic acid (C25H17BO2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C25H17BO2 |
| Molecular Weight | 360.21 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) | 17.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Spirobi Standards
- 9,9’-Spirobi[fluorene]-4-boronic Acid (CAS 1421789-05-0)
- 77-08-7 1,1'-Spirobi(indan)-5,5',6,6'-tetrol, 3,3,3',3'-tetramethyl- (8CI) 1,1'-Spirobi(1H-indene)-5,5',6,6'-tetrol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl- 1,1'-Spirobi(1H-inden)-5,5',6,6'-tetrol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl- 2,2',3,3'-Tetrahydro-3,3,3',3'-tetramethyl-1,1'-spirobi(1H-indene)-5,5',6,6'-tetrol AI3-16787 EINECS 201-003-1 NSC 512922 1,1'-Spirobi(indane-5,6-diol), 3,3,3',3'-tetramethyl- TTS 5 AI 3-16787 (CAS 77-08-7)
- 9,9'-Spirobi[fluorene]-2,2'-diamine (CAS 67665-45-6)
- 9,9'-Spirobi[fluorene]-3,3',6,6'-tetraamine (CAS 622011-41-0)
- 9,9'-Spirobi[9H-9-silafluorene] (CAS 159-68-2)
- 9,9'-Spirobi[9H-fluoren]-2-amine (CAS 118951-68-1)
- 9,9'-Spirobi[fluoren]-4-amine (CAS 1579281-06-3)
- 1,1'-(9,9'-Spirobi[fluorene]-2,2'-diyl)diethanone (CAS 22824-83-5)
Recommended Standards
- tert-Butyl (6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazol-2-yl)carbamate (CAS 1404480-24-5)
- 2-Bromo-5-methoxy-N-(pyrazolo[1,5-a]pyridin-3-ylmethyl)benzamide (CAS 1396854-81-1)
- N-(3-Bromophenyl)-6,7-dimethoxyquinazolin-4-amine (CAS 153436-54-5)
- 2-[2-[2-(2-iodoacetyl)oxyethoxy]ethoxy]ethyl-trimethyl-ammonium (CAS 1360427-05-9)
- Ethyl 3,4-difluoro-5-nitrophenylacetate (CAS 1804517-27-8)
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- 2-Amino-N-methyl-5-(pyrrolidin-1-yl)benzamide (CAS 1339011-02-7)
- 2-(6-Fluoro-1H-benzo[d]imidazol-2-yl)ethan-1-ol (CAS 915924-12-8)
- N,N'-Dipyridoylhydrazine (CAS 840-79-9)
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- 3-((4-Ethylphenyl)amino)-1-(4-fluorophenyl)propan-1-one (CAS 883793-55-3)
- 1-(Methylsulfonyl)-4-pyrazoleboronic acid pinacol ester, 97% (CAS 944994-03-0)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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