2,7-Dibromo-2’,3’,5’,6’-tetrahydrospiro[fluorene-9,4’-pyran] CAS 934269-17-7
| CAS No. | 934269-17-7 |
| Molecular Formula | C17H14Br2O |
| Molecular Weight | 394.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,7-Dibromo-2’,3’,5’,6’-tetrahydrospiro[fluorene-9,4’-pyran] (CAS 934269-17-7), molecular formula C17H14Br2O and molecular weight 394.10 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,7-Dibromo-2’,3’,5’,6’-tetrahydrospiro[fluorene-9,4’-pyran] (C17H14Br2O) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 394.10 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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), 2,7-Dibromo-2’,3’,5’,6’-tetrahydrospiro[fluorene-9,4’-pyran] 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 | C17H14Br2O |
| Molecular Weight | 394.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2,5-Dibromo-3,4-diphenylthiophene (CAS 83125-18-2)
- 2,6-Dibromo-9,9,10,10-tetramethyl-9,10-dihydroanthracene (CAS 886363-70-8)
- 2-((6,8-Dibromo-4-hydroxyquinazolin-2-yl)thio)acetic acid (CAS 68055-61-8)
- 1-(2,4-Dibromo-6-(trifluoromethoxy)phenyl)thiourea (CAS 1303993-76-1)
- (E)-3-(3,5-dibromo-4-(2-methoxy-2-oxoethoxy)phenyl)acrylic acid (CAS 937599-58-1)
- 3,6-Dibromo-1,8-dichloro-9H-carbazole (CAS 64389-48-6)
- 3,5-Dibromo-2-fluoro-4-iodotoluene (CAS 1000576-52-2)
- 2,4-Dibromo-6-fluoro-3-iodotoluene (CAS 1000576-80-6)
Recommended Standards
- 2,6-Dibromospiro[cyclopenta[2,1-b:3,4-b']dithiophene-4,2'-[1,3]dioxolane] (CAS 771579-00-1)
- Ambroxol Impurity 47 (CAS 2250242-11-4)
- (1Z,1'Z)-N,N'-(Ethane-1,2-diyl)bis(1-(4-bromophenyl)methanimine) (CAS 78036-47-2)
- Ambroxol Impurity 50 (CAS CATO-C4X-108550)
- (4-Fluoro-3-(pentyloxy)phenyl)(methyl)sulfane (CAS 1443311-84-9)
- 3-(1-((4-((6-Methoxyquinolin-8-yl)amino)pentyl)amino)ethylidene)dihydrofuran-2(3H)-one (CAS 79781-00-3)
- N-(5-chloro-2-methoxyphenyl)-2-(2-(4-ethylphenoxy)acetyl)hydrazine-1-carboxamide (CAS 904197-37-1)
- N-(3-aminophenyl)hexanamide (CAS 231954-22-6)
- tert-Butyl 2-(6-(dimethylamino)-2-methylpyridin-3-yl)piperidine-1-carboxylate (CAS 1352524-05-0)
- 104092-78-6 7943AC C11H20O3 Ethyl 7-oxononanoate (CAS 104092-78-6)
- 7-Methoxy-1,8-naphthyridin-4(1H)-one (CAS 286411-20-9)
- 4-methylpiperidine-2,6-dione (CAS 25077-26-3)
- n-((1h-Imidazol-2-yl)methyl)-2-methylbutan-2-amine (CAS 1247926-90-4)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
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