2'-Bromospiro[cyclohexane-1,9'-fluorene] CAS 797056-48-5
| CAS No. | 797056-48-5 |
| Molecular Formula | C18H17Br |
| Molecular Weight | 313.23 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.
2'-Bromospiro[cyclohexane-1,9'-fluorene] (CAS 797056-48-5), molecular formula C18H17Br and molecular weight 313.23 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H17Br, 2'-Bromospiro[cyclohexane-1,9'-fluorene] contains bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 313.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2'-Bromospiro[cyclohexane-1,9'-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.
Physical & Chemical Properties
| Molecular Formula | C18H17Br |
| Molecular Weight | 313.23 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
Related Bromospiro Standards
- 3'-Bromospiro[cyclohexane-1,9'-fluorene] (CAS 1547491-59-7)
- 6'-Bromospiro[cyclobutane-1,2'-thiochroman]-4'-one 1',1'-dioxide (CAS 2198098-45-0)
- 7'-Bromospiro[cyclobutane-1,2'-thiochroman]-4'-one 1',1'-dioxide (CAS 2198384-34-6)
- 1'-Acetyl-6-bromospiro[indoline-3,4'-piperidin]-2-one (CAS 1160248-50-9)
- 7-Bromospiro[chromane-2,3'-thietan]-4-one 1',1'-dioxide (CAS 2200003-26-3)
- 2-Bromospiro[fluorene-9,2'-[1,3]dioxolane] (CAS CATO-CIM-101728)
- 5'-Bromospiro[[1,3]dithiolane-2,3'-indolin]-2'-one (CAS 113549-10-3)
- 2'-Bromospiro[cyclopentane-1,9'-fluorene] (CAS 797056-47-4)
Recommended Standards
- 2-(4-Bromophenyl)-5-pentyl-1,3-dioxane (CAS 320423-73-2)
- 4-(Benzylamino)-3-nitro-6-(trifluoromethyl)pyridin-2-ol (CAS 947144-38-9)
- 2-((4-Bromophenyl)thio)-1-(thiophen-2-yl)ethan-1-one (CAS 380169-17-5)
- 5-Cyclopropyl-3-(2-(trifluoromethoxy)phenyl)isoxazole-4-carboxylic acid (CAS 2191433-23-3)
- 4-Chloro-3-(1,1,2,2,3,3,4,4,4-nonafluorobutyl)-5-phenyl-1h-pyrazole (CAS 1029636-15-4)
- Azetidin-1-yl(4-bromo-3-methoxyphenyl)methanone (CAS 1352621-01-2)
- 3-Bromo-2-fluoro-5-methylaniline (CAS 1207319-71-8)
- 3-Amino-5-methylfuran-2-carbaldehyde (CAS 213178-21-3)
- trans-3-fluorocyclopentan-1-amine (CAS 1354425-58-3)
- 2-(N-(2,4-dichloro-5-(2-methoxyethoxy)phenyl)phenylsulfonamido)-N-(4-fluorophenyl)acetamide (CAS 338967-77-4)
- (1r)-1-(2-Methylcyclopropyl)ethan-1-ol (CAS 1372904-84-1)
- 4-(4-Iodophenoxy)-2-(trifluoromethyl)quinazoline (CAS 339018-48-3)
- 1-((Tert-butoxycarbonyl)amino)cyclooctane-1-carboxylic acid (CAS 199330-75-1)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
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