4-Bromospiro[fluorene-9,9’-xanthene] CAS 1609484-45-8
| CAS No. | 1609484-45-8 |
| Molecular Formula | C25H15BrO |
| Molecular Weight | 411.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C25H15BrO, 4-Bromospiro[fluorene-9,9’-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 411.29 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).
4-Bromospiro[fluorene-9,9’-xanthene] (CAS 1609484-45-8), molecular formula C25H15BrO and molecular weight 411.29 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromospiro[fluorene-9,9’-xanthene] 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 | 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.) | 1993 |
| 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)
- 3'-Bromospiro[fluorene-9,9'-xanthene] (CAS 1621397-55-4)
- 2-Bromospiro[9H-fluorene-9,9'-[9H]xanthene] (CAS 899422-06-1)
- 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
- 3-bromosprio[fluorene-9,9'-xanthene (CAS 1609484-28-7)
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- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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