2,7-Dibromospiro[9H-fluorene-9,9'-[9H]xanthene] CAS 198142-65-3
| CAS No. | 198142-65-3 |
| Molecular Formula | C25H14Br2O |
| Molecular Weight | 490.19 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.
CATO supplies 2,7-Dibromospiro[9H-fluorene-9,9'-[9H]xanthene] (CAS 198142-65-3), a certified reference material (molecular formula C25H14Br2O, MW 490.19 g/mol) for analytical method development and quality control.
Based on its molecular formula C25H14Br2O, 2,7-Dibromospiro[9H-fluorene-9,9'-[9H]xanthene] contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 490.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures 2,7-Dibromospiro[9H-fluorene-9,9'-[9H]xanthene] under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C25H14Br2O |
| Molecular Weight | 490.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Halogen Content | Br-containing |
Related Dibromospiro Standards
- 2',7'-Dibromospiro[fluorene-9,9'-xanthene] (CAS 1346002-88-7)
- 1’-Boc-2,7-dibromospiro[fluorene-9,4’-piperidine] (CAS 1616113-98-4)
- 2',7'-Dibromospiro[cyclopenta[1,2-b:5,4-b']dipyridine-5,9'-fluorene] (CAS 198142-63-1)
- 5,9-Dibromospiro[benzo[c]fluorene-7,9'-fluorene] (CAS 1242570-65-5)
- 2',7'-Dibromospiro[adamantane-2,9'-fluorene] (CAS 727730-32-7)
- 1’-Acetyl-2,7-dibromospiro[fluorene-9,4’-piperidine] (CAS 1616114-00-1)
- 2,7-Dibromospiro[fluorene-9,8'-indolo[3,2,1-de]acridine] (CAS 902525-12-6)
- 2,7-Dibromospiro[fluorene-9,2'-[1,3]dithiolane] (CAS 113425-39-1)
Recommended Standards
- 3,3'-Dibromo-9,9'-bicarbazole (CAS 2237969-71-8)
- Terbutaline Impurity 19 (CAS CATO-C4X-118319)
- 4,7-Bis(4-bromophenyl)-1,10-phenanthroline (CAS 97802-08-9)
- Resmetirom impurity 120 (CAS CATO-C4X-2912120)
- 4-(3-Bromo-4-methoxybenzylidene)-2-phenyloxazol-5(4H)-one (CAS 29973-99-7)
- 2-Bromo-6-chloro-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1227268-66-7)
- 7-Benzyl-2,7-diazaspiro[4.4]nonan-3-one (CAS 909723-04-2)
- Paliperidone Impurity 64 (CAS 1415488-05-9)
- (R)-3-Hydroxyhexadecanoic acid (CAS 20595-04-4)
- 1-(4-chloro-1-ethyl-1H-pyrazol-5-yl)-N-methylmethanamine (CAS 1002032-51-0)
- Cefpirome Impurity 17 (CAS CATO-C4X-120717)
- 5,5-Dimethylcyclohex-1-enecarboxylic acid (CAS 57365-74-9)
- 1-Bromo-2-(chloromethoxy)benzene (CAS 54257-94-2)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com