2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene] CAS 899422-06-1
| CAS No. | 899422-06-1 |
| Molecular Formula | C25H15BrO |
| Molecular Weight | 411.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene] (CAS 899422-06-1) is a high-purity analytical reference standard with the molecular formula C25H15BrO and a molecular weight of 411.29 g/mol.
2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene] (C25H15BrO) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C25H15BrO |
| Molecular Weight | 411.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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.) | 1987 |
| Halogen Content | Br-containing |
Related Bromospiro Standards
- 2'-Bromospiro[fluorene-9,9'-xanthene] (CAS 1477458-14-2)
- 4'-Bromospiro[fluorene-9,9'-xanthene] (CAS 1609484-29-8)
- 4-Bromospiro[fluorene-9,9’-xanthene] (CAS 1609484-45-8)
- 3'-Bromospiro[fluorene-9,9'-xanthene] (CAS 1621397-55-4)
- Benzyl 5-bromospiro[indole-3,4'-piperidine]-1'-carboxylate (CAS 1375076-92-8)
- 1’-Boc-6-bromospiro[chroman-2,4’-piperidin]-4-one (CAS 690632-38-3)
- 1'-Benzyl-6-bromospiro[chroman-2,4'-piperidin]-4-one (CAS 81109-72-0)
- 5-Bromospiro[benzo[c]fluorene-7,9'-fluorene] (CAS 1175203-78-7)
Recommended Standards
- 2-(4-Bromophenyl)-9-phenyl-1,10-phenanthroline (CAS 197442-25-4)
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- di-tert-Butyl 3-amino-6-bromo-1H-indole-1,2-dicarboxylate (CAS 2681278-24-8)
- Ethyl 6-bromo-5-methoxy-1-methyl-2-(morpholinomethyl)-1H-indole-3-carboxylate (CAS 40963-86-8)
- 3-(4-(Chloromethyl)phenyl)cyclobutan-1-one (CAS 1378816-02-4)
- 7-Bromo-2,3-dihydro-1H-inden-4-amine (CAS 77812-12-5)
- 1-(3-Bromophenyl)cyclopentanemethanamine (CAS 1098349-33-7)
- 5,8-Dimethoxy-3-methylquinoxalin-2-ol (CAS 67867-85-0)
- 1-Benzyl-1H-indazol-3-amine (CAS 28519-78-0)
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