6840-28-4 (4-Methylphenyl)(oxo)diphenyl-lambda~5~-phosphane DTXSID30502229 CAS 6840-28-4
| CAS No. | 6840-28-4 |
| Molecular Formula | C19H17OP |
| Molecular Weight | 292.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6840-28-4 (4-Methylphenyl)(oxo)diphenyl-lambda~5~-phosphane DTXSID30502229 (CAS 6840-28-4), a certified reference material (molecular formula C19H17OP, MW 292.31 g/mol) for analytical method development and quality control.
The molecular framework of 6840-28-4 (4-Methylphenyl)(oxo)diphenyl-lambda~5~-phosphane DTXSID30502229 (C19H17OP) is characterized by a steroid core, organophosphorus functionality, a hydroxyl group, an ether linkage. 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 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), 6840-28-4 (4-Methylphenyl)(oxo)diphenyl-lambda~5~-phosphane DTXSID30502229 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 | C19H17OP |
| Molecular Weight | 292.31 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Methylphenyl Standards
- N-(4-Methylphenyl)-4-nitrobenzenesulfonamide (CAS 109845-76-3)
- 6840-26-2 (2-Methylphenyl)(oxo)diphenyl-lambda~5~-phosphane DTXSID40502230 (CAS 6840-26-2)
- 3-(2-Methylphenyl)-2-trifluoromethylpropiophenone (CAS 898789-73-6)
- 3-(3-Methylphenyl)-3-trifluoromethylpropiophenone (CAS 898791-05-4)
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Recommended Standards
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- 6-Nitro-2-phenylquinoxaline (CAS 71896-99-6)
- Sodium 2-iodobenzenesulfonate (CAS 62973-69-7)
- Methyl 5-methyl-2-oxo-5-phenyl-2,5-dihydrofuran-3-carboxylate (CAS 67498-41-3)
- 2H,3H,4H,5H-Pyrido[4,3-f][1,4]oxazepine (CAS 956433-25-3)
- Isothiazolo[3,4-d]pyrimidine (CAS 14521-32-5)
- Ethyl 2-(4-methyl-1h-pyrazol-1-yl)propanoate (CAS 1005650-04-3)
- 2-Naphthalenecarboxylic acid, 4-[2-(2,5-dichlorophenyl)diazenyl]-3-hydroxy- (CAS 51867-77-7)
- Semaglutide Impurity 192 (CAS CATO-C4X-2226192)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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