[4-(2,4-Difluorophenoxy)-3-nitrophenyl]methyl 3,4-dichlorobenzoate CAS 338960-95-5
| CAS No. | 338960-95-5 |
| Molecular Formula | C20H11Cl2F2NO5 |
| Molecular Weight | 454.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
[4-(2,4-Difluorophenoxy)-3-nitrophenyl]methyl 3,4-dichlorobenzoate (CAS 338960-95-5) is a high-purity analytical reference standard with the molecular formula C20H11Cl2F2NO5 and a molecular weight of 454.21 g/mol.
[4-(2,4-Difluorophenoxy)-3-nitrophenyl]methyl 3,4-dichlorobenzoate (C20H11Cl2F2NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C20H11Cl2F2NO5 |
| Molecular Weight | 454.21 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Difluorophenoxy Standards
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- [4-(2,4-Difluorophenoxy)-3-nitrophenyl]methyl N-[3-(trifluoromethyl)phenyl]carbamate (CAS 338960-97-7)
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- [4-(2,4-Difluorophenoxy)-3-nitrophenyl]methyl N-(4-chlorophenyl)carbamate (CAS 338960-96-6)
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Recommended Standards
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- (E)-N'-(2-Iodobenzylidene)-2-(trifluoromethyl)benzenesulfonohydrazide (CAS 2301998-86-5)
- methyl 7-bromo-8-(1-hydroxy-1-methyl-ethyl)-2-oxo-selenopheno[3,2-h]chromene-3-carboxylate (CAS 2173398-07-5)
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- 5-Ethyl-3-(trifluoromethyl)-1H-pyrazole (CAS 436806-62-1)
- 2-Amino-2-(7-chloro-1H-indol-3-yl)acetic acid (CAS 1270313-61-5)
- Ethyl 3-(tert-butyl)-2-ethyl-3-methyloxirane-2-carboxylate (CAS 1500813-74-0)
- 3-(2-Chloro-acetylamino)-piperidine-1-carboxylic acid benzyl ester (CAS 1353957-99-9)
- 2-(Octan-2-yl)phenol (CAS 18626-98-7)
- 2-(5-Methyl-6-oxo-1,6-dihydropyridazin-3-yl)acetic acid (CAS 1922898-82-5)
- 2-((4-Phenylquinazolin-2-yl)amino)ethan-1-ol (CAS 53364-90-2)
- FMRF-Like Neuropeptide (CAS 121801-61-4)
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