Diphenyl [(2,4-dichlorophenyl)(hydroxy)methyl]phosphonate CAS 338759-49-2
| CAS No. | 338759-49-2 |
| Molecular Formula | C19H15Cl2O4P |
| Molecular Weight | 409.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Diphenyl [(2,4-dichlorophenyl)(hydroxy)methyl]phosphonate (C19H15Cl2O4P) is characterized by a flavonoid core, a phosphate ester group, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Diphenyl [(2,4-dichlorophenyl)(hydroxy)methyl]phosphonate (CAS 338759-49-2) is a high-purity analytical reference standard with the molecular formula C19H15Cl2O4P and a molecular weight of 409.20 g/mol.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H15Cl2O4P |
| Molecular Weight | 409.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| 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) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
Related Diphenyl Standards
- 7,7-Diphenyl-5,7-dihydroindeno[2,1-b]carbazole (CAS 1257220-52-2)
- (S)-2-[Diphenyl[[trisisopropylsilyl]oxy]methyl]pyrrolidine (CAS 1339961-44-2)
- 11,12-Diphenyl-11,12-dihydroindolo[2,3-a]carbazole (CAS 222044-88-4)
- 5,11-Diphenyl-5,11-dihydroindolo[3,2-b]carbazole (CAS 58328-30-6)
- 6,12-Diphenyl-5,11-dihydroindolo[3,2-b]carbazole (CAS 910217-11-7)
- 4-Methyl-3,5-diphenyl-1-((3-(trifluoromethyl)benzyl)oxy)-1H-pyrazole (CAS 400084-14-2)
- Diphenyl(((1-phenyl-1H-tetrazol-5-yl)sulfinyl)methyl)phosphine oxide (CAS 1021879-81-1)
- 2,3-Diphenyl-6-(pentafluorosulfanyl)quinoxaline (CAS 1379803-63-0)
Recommended Standards
- 3-Iodo-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine-5-carbonitrile (CAS 757978-12-4)
- CAS 2290526-31-5 (CAS 2290526-31-5)
- 1-(Phenylsulfonyl)-5-cyano-2-iodo-6-azaindole (CAS 1260385-19-0)
- Bromo-PEG5-phosphonic acid (CAS 1446282-37-6)
- 3,4-Dibromo-1H-pyrazolo[3,4-b]pyridine (CAS 1357945-12-0)
- 5-Amino-8-methylquinoline (CAS 50358-40-2)
- Retorphan (CAS 112573-72-5)
- 4-(Chloromethyl)-1-(3,4,5-trifluorophenyl)-1H-1,2,3-triazole (CAS 1344062-41-4)
- 6-Methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole (CAS 955979-12-1)
- 2'-Nitro-[1,1'-biphenyl]-4-amine (CAS 1140-28-9)
- N-Benzyl-2,3,4,6-tetra-O-benzyl-1,5-dideoxy-imino-L-iditol (CAS 151963-95-0)
- Sodium 2,5-difluoro-4-methylbenzene-1-sulfinate (CAS 1499532-43-2)
- N-(4-Chlorophenyl)-1,2,3,4-tetrahydroacridine-9-carboxamide (CAS 327059-70-1)
- D-Lys20-Tirzepatide (CAS CATO-CPTD788914)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com