9,9'-Spirobi[fluorene]-2,7-diyldiboronic acid CAS 1222537-26-9
| CAS No. | 1222537-26-9 |
| Molecular Formula | C25H18B2O4 |
| Molecular Weight | 404.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 9,9'-Spirobi[fluorene]-2,7-diyldiboronic acid (CAS 1222537-26-9), a certified reference material (molecular formula C25H18B2O4, MW 404.03 g/mol) for analytical method development and quality control.
Based on its molecular formula C25H18B2O4, 9,9'-Spirobi[fluorene]-2,7-diyldiboronic acid contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 404.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 9,9'-Spirobi[fluorene]-2,7-diyldiboronic 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 | C25H18B2O4 |
| Molecular Weight | 404.03 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Spirobi Standards
- 9,9'-Spirobi[fluorene]-2',7-diyldiboronic acid (CAS 1222007-94-4)
- 3-Phenyl-9,9'-spirobi[fluoren]-2-amine (CAS 2214221-84-6)
- 1,1'-(9,9'-Spirobi[fluorene]-2,2'-diyl)diethanone (CAS 22824-83-5)
- 9,9'-Spirobi[fluorene]-3,3',6,6'-tetraamine (CAS 622011-41-0)
- 2-(9,9'-Spirobi[fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1161009-89-7)
- 2-(9,9'-Spirobi[fluoren]-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1346007-05-3)
- 2-(9,9''-Spirobi[fluoren]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 884336-44-1)
- 9,9'-Spirobi[fluoren]-3-ylboronic acid (CAS 1421789-04-9)
Recommended Standards
- 4-((2,4-Dichlorobenzyl)oxy)-3-iodobenzonitrile (CAS 1706434-38-9)
- Bromfenvinphos (CAS 33399-00-7)
- 6-Bromo-1-(cyclopropylmethyl)-3-iodoquinolin-4(1H)-one (CAS 1320361-69-0)
- Vortioxetine Impurity 72 (CAS CATO-C4X-105672)
- 2-(2-Fluoro-4-methoxyphenyl)ethanamine (CAS 402832-76-2)
- Moracin O (CAS 123702-97-6)
- 4-Chloro-3-[(methylamino)sulfonyl]benzoic acid (CAS 1429-44-3)
- trans-4-phenyl-3-buten-2-one-1,1,1,3-d<SUB>4</SUB> (CAS 130208-38-7)
- Benzyl 1-morpholino-1-oxopropan-2-ylcarbamate (CAS 56414-77-8)
- 7-methanesulfonyl-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride (CAS 123018-28-0)
- 3-(3-Fluorophenyl)-1,2,4-oxadiazole-5-thiol (CAS 1342386-00-8)
- (3S)-3-amino-3-(3-fluorofuran-2-yl)propanoic acid (CAS 1366442-62-7)
- 1,1-Dichloro-1-Fluoro-4-Methyl-Pentan-2-One (CAS 6632-87-7)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
Why CATO?
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