(1S)-6,6'-Bis(4-chlorophenyl)-2,2',3,3'-tetrahydro-1,1'-spirobi[1H-indene]-7,7'-diol CAS 1258326-99-6
| CAS No. | 1258326-99-6 |
| Molecular Formula | C29H22Cl2O2 |
| Molecular Weight | 473.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (1S)-6,6'-Bis(4-chlorophenyl)-2,2',3,3'-tetrahydro-1,1'-spirobi[1H-indene]-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.
(1S)-6,6'-Bis(4-chlorophenyl)-2,2',3,3'-tetrahydro-1,1'-spirobi[1H-indene]-7,7'-diol (CAS 1258326-99-6), molecular formula C29H22Cl2O2 and molecular weight 473.39 g/mol, is a CATO reference standard with documented purity and traceability.
(1S)-6,6'-Bis(4-chlorophenyl)-2,2',3,3'-tetrahydro-1,1'-spirobi[1H-indene]-7,7'-diol (C29H22Cl2O2) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C29H22Cl2O2 |
| Molecular Weight | 473.39 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
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