5-Chloro-2-(naphthalen-2-yl)-1H-indene-1,3(2H)-dione CAS 33121-92-5
| CAS No. | 33121-92-5 |
| Molecular Formula | C19H11ClO2 |
| Molecular Weight | 306.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 306.74 g/mol gives 5-Chloro-2-(naphthalen-2-yl)-1H-indene-1,3(2H)-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Chloro-2-(naphthalen-2-yl)-1H-indene-1,3(2H)-dione (CAS 33121-92-5) is a high-purity analytical reference standard with the molecular formula C19H11ClO2 and a molecular weight of 306.74 g/mol.
5-Chloro-2-(naphthalen-2-yl)-1H-indene-1,3(2H)-dione (C19H11ClO2) 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.
As a certified reference material (CRM), 5-Chloro-2-(naphthalen-2-yl)-1H-indene-1,3(2H)-dione 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 | C19H11ClO2 |
| Molecular Weight | 306.74 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, 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
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- tert-Butyl ((2S,3S)-1-hydroxy-2-methyl-4-oxoazetidin-3-yl)carbamate (CAS 80542-48-9)
- Cyclobutane-1,3-diamine (CAS 91301-66-5)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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