1-bromo-9,9'-Spirobi[9H-fluorene] CAS 1450933-18-2
| CAS No. | 1450933-18-2 |
| Molecular Formula | C25H15Br |
| Molecular Weight | 395.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-bromo-9,9'-Spirobi[9H-fluorene] 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.
1-bromo-9,9'-Spirobi[9H-fluorene] (CAS 1450933-18-2), molecular formula C25H15Br and molecular weight 395.29 g/mol, is a CATO reference standard with documented purity and traceability.
1-bromo-9,9'-Spirobi[9H-fluorene] (C25H15Br) contains bromine substitution, a polycyclic aromatic system. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C25H15Br |
| Molecular Weight | 395.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1992 |
| Halogen Content | Br-containing |
Related bromo Standards
- 4-Bromo-9,9'-spirobi[fluorene] (CAS 1161009-88-6)
- 3-Bromo-9,9'-spirobi[fluorene] (CAS 1361227-58-8)
- 4-(4-Bromo-2-cyanophenoxymethyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1426921-34-7)
- 6-Bromo-2-naphthyl β-<SC>D</SC>-glucopyranoside (CAS 15548-61-5)
- 2-Bromo-9,9’-spirobifluorene (CAS 171408-76-7)
- 2-Bromo-5-(1-tosylpiperidin-2-yl)pyridine (CAS 1352524-62-9)
- 2-Bromo-3-(1-tosylpiperidin-2-yl)pyridine (CAS 1352527-63-9)
- 2-Bromo-N-[4-(2,3-dihydro-1H-indol-1-ylsulfonyl)-phenyl]acetamide (CAS 1138445-69-8)
Recommended Standards
- tert-Butyl 3-(6-bromo-1-oxoisoindolin-2-yl)piperidine-1-carboxylate (CAS 1443287-35-1)
- 2,3-Dibenzyl-5-bromobenzoic Acid Methyl Ester (CAS 182676-91-1)
- 2-Ethylbutyl 4-(2-bromophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 300360-02-5)
- Capivasertib Impurity 46 (CAS CATO-C4X-331246)
- 5-((Tert-butoxycarbonyl)amino)-2-methylthiazole-4-carboxylic acid (CAS 1270034-31-5)
- Methyl 1,4,5,6,7,8-hexahydrocyclohepta[b]pyrrole-2-carboxylate (CAS 100445-46-3)
- 2-Bromo-3-(2,6-difluoro-4-(trifluoromethyl)phenoxy)-1-fluoro-4-nitrobenzene (CAS 2244088-76-2)
- 2-{2-[(4-Chlorobenzyl)oxy]ethyl}piperidinehydrochloride (CAS 1219980-68-3)
- Benzyl 1-amino-6-azaspiro[2.5]octane-6-carboxylate (CAS 1428727-74-5)
- 2-(3-Hydroxypropoxy)acetonitrile (CAS 1430413-62-9)
- 1-(4-Benzylpiperazin-1-yl)-2-phenoxyethan-1-one (CAS 217646-10-1)
- 5-propyl-4H-1,2,4-triazole-3-thiol (CAS 7271-46-7)
- 3-(4-Fluorophenyl)quinazoline-2,4(1H,3H)-dione (CAS 16332-89-1)
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