| CAS No. | 7564-51-4 |
| Molecular Formula | C11H13OP |
| Molecular Weight | 192.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
As a certified reference material (CRM), 3-Methyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide 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.
3-Methyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide (CAS 7564-51-4), molecular formula C11H13OP and molecular weight 192.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Methyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide (C11H13OP) is characterized by organophosphorus functionality, a hydroxyl group, an ether linkage, an aromatic ring system. 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).
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.
| Molecular Formula | C11H13OP |
| Molecular Weight | 192.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |