9-Chloro-9-phenyl-9H-xanthene CAS 42506-03-6
| CAS No. | 42506-03-6 |
| Molecular Formula | C19H13ClO |
| Molecular Weight | 292.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 292.76 g/mol gives 9-Chloro-9-phenyl-9H-xanthene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
9-Chloro-9-phenyl-9H-xanthene (CAS 42506-03-6) is a high-purity analytical reference standard with the molecular formula C19H13ClO and a molecular weight of 292.76 g/mol.
The molecular framework of 9-Chloro-9-phenyl-9H-xanthene (C19H13ClO) is characterized by a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 9-Chloro-9-phenyl-9H-xanthene 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 | C19H13ClO |
| Molecular Weight | 292.76 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Halogen Content | Cl-containing |
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