| CAS No. | 1621066-64-5 |
| Molecular Formula | C19H20O2 |
| Molecular Weight | 280.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
(1S)-2,2',3,3'-tetrahydro-6,6'-dimethyl-1,1'-Spirobi[1H-indene]-7,7'-diol (CAS 1621066-64-5) is a high-purity analytical reference standard with the molecular formula C19H20O2 and a molecular weight of 280.36 g/mol.
Based on its molecular formula C19H20O2, (1S)-2,2',3,3'-tetrahydro-6,6'-dimethyl-1,1'-Spirobi[1H-indene]-7,7'-diol contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 280.36 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), (1S)-2,2',3,3'-tetrahydro-6,6'-dimethyl-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.
| Molecular Formula | C19H20O2 |
| Molecular Weight | 280.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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.) | 1993 |