(4-fluorobenzyl)(methyl)diphenylphosphonium chloride CAS 258518-44-4
| CAS No. | 258518-44-4 |
| Molecular Formula | C20H19FP |
| Molecular Weight | N/A |
| 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.
CATO supplies (4-fluorobenzyl)(methyl)diphenylphosphonium chloride (CAS 258518-44-4), a certified reference material (molecular formula C20H19FPCl, MW 344.79 g/mol) for analytical method development and quality control.
Based on its molecular formula C20H19FPCl, (4-fluorobenzyl)(methyl)diphenylphosphonium chloride contains organophosphorus functionality, fluorine/chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C20H19FP Cl |
| Molecular Weight | 344.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
Related fluorobenzyl Standards
- (4-Fluorobenzyl)hydrazine dihydrochloride (CAS 1000805-93-5)
- (3-Fluorobenzyl)hydrazine Dihydrochloride (CAS 1000805-94-6)
- 5-((3-Fluorobenzyl)oxy)-1H-pyrazol-3-amine (CAS 1000896-51-4)
- 4-(5-(4-Fluorobenzyl)-1H-pyrazol-3-yl)pyridine (CAS 1001112-68-0)
- 2-(5-(4-Fluorobenzyl)-3-(pyridin-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)acetic acid (CAS 1001383-88-5)
- 3-(4-Fluorobenzyl)pyrrolidinehydrochloride (CAS 1003561-95-2)
- 1-(4-Fluorobenzyl)-4-isothiocyanato-3,5-dimethyl-1h-pyrazole (CAS 1004193-64-9)
- 4-((4-Fluorobenzyl)amino)-1-methyl-1H-pyrazole-3-carboxylic acid (CAS 1006448-78-7)
Recommended Standards
- Methyl 2-amino-4-cyano-1H-imidazole-5-carboxylate (CAS 225644-24-6)
- (2S,3R)-3-Amino-2-phenylbutan-2-ol (CAS 30185-68-3)
- 1-(3,4-Dichlorobenzyl)pyrrolidin-3-ol, 95% (CAS 415953-24-1)
- 4-Methylphenyl 4-methoxypyridin-2-ylcarbamate (CAS 1993309-89-9)
- N-(3-Acetyl-5-(trifluoromethyl)phenyl)acetamide (CAS 1393547-39-1)
- 1-Isopropoxy-4-(trifluoromethoxy)-benzene (CAS 1030471-18-1)
- 2-Chloro-5-fluoro-1-methyl-1H-indole-3-carbaldehyde (CAS 1310141-83-3)
- Diethyl (aminomethyl)phosphonate (CAS 50917-72-1)
- (E)-N-{5H-chromeno[4,3-d]pyrimidin-2-yl}-N'-[(4-methylphenyl)methoxy]methanimidamide (CAS 866142-92-9)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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