4-Chloro-2-phenyl-1H-indene-1,3(2H)-dione CAS 16707-79-2
| CAS No. | 16707-79-2 |
| Molecular Formula | C15H9ClO2 |
| Molecular Weight | 256.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Chloro-2-phenyl-1H-indene-1,3(2H)-dione (CAS 16707-79-2), molecular formula C15H9ClO2 and molecular weight 256.68 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Chloro-2-phenyl-1H-indene-1,3(2H)-dione (C15H9ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 256.68 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-Chloro-2-phenyl-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 | C15H9ClO2 |
| Molecular Weight | 256.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
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- Riociguat Impurity 11 (CAS CATO-C4X-174911)
- 1-(6-Chloropyridin-2-yl)-3-methyl-4-(3-(trifluoromethyl)phenyl)-1H-pyrazol-5-amine (CAS 446276-01-3)
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