4,4'-Dibromo-1,1'-spirobiindane-7,7'-diol CAS 681481-91-4
| CAS No. | 681481-91-4 |
| Molecular Formula | C17H14Br2O2 |
| Molecular Weight | 410.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4'-Dibromo-1,1'-spirobiindane-7,7'-diol (CAS 681481-91-4), a certified reference material (molecular formula C17H14Br2O2, MW 410.10 g/mol) for analytical method development and quality control.
Structurally, 4,4'-Dibromo-1,1'-spirobiindane-7,7'-diol (C17H14Br2O2) 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 410.10 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 4,4'-Dibromo-1,1'-spirobiindane-7,7'-diol 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 | C17H14Br2O2 |
| Molecular Weight | 410.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- (R)-6,6'-Dibromo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 1286189-15-8)
- (S)-6,6'-Dibromo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 1621066-74-7)
- 6,6'-Dibromo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 1807777-59-8)
- (R)-4,4'-Dibromo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 681481-94-7)
- (S)-4,4'-Dibromo-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 636601-27-9)
- 8,10-Dibromo-5,6-dihydro-2,4-dimethyl-4H-benzo[b]furo[3′,2′:6,7]cyclohepta[1,2-d]furan (CAS 220542-74-5)
- 2,2'-((2,5-Dibromo-1,4-phenylene)bis(oxy))bis(N,N-diethylethan-1-amine) (CAS 233753-19-0)
- (3,4-Dibromo-3,4,4-trifluorobutanesulfonyl)benzene (CAS 478247-75-5)
Recommended Standards
- 3,9-Dibromoperylene (CAS 56752-35-3)
- 3,10-Dibromoperylene (CAS 85514-20-1)
- 1H,1H,11H,11H-Perfluoro-3,6,9-trioxaundecane-1,11-diol (CAS 330562-44-2)
- 2-(4-Bromobenzenesulfonyl)-1-(3,4-dichlorophenyl)ethan-1-ol (CAS 477859-20-4)
- 2-Methoxy-5,5-dimethyl-1,3-dioxane (CAS 78319-58-1)
- N-(4-Amino-2-Hydroxyphenyl)-2,2,3,3,4,4,4-Heptafluorobutyramide (CAS 847-51-8)
- 5,6,7,8-tetrahydronaphthalene-2-carboxamide (CAS 13407-63-1)
- Methyl 2-(5-bromo-2-fluoropyridin-3-yl)acetate (CAS 1807156-89-3)
- 4-Acetyl-N-(2-isopropylphenyl)benzenesulfonamide (CAS 1284730-41-1)
- 2-([1,1'-Biphenyl]-4-yl)benzo[d]oxazole-6-carbaldehyde (CAS 67563-40-0)
- 2-(Pyridin-3-yl)thiazol-4-ol (CAS 751448-15-4)
- (Tetrahydro-2H-pyran-4-yl)(thiophen-3-yl)methanamine hydrochloride (CAS 1864058-94-5)
- Aripiprazole, thio- (CAS 573691-04-0)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
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