Ethyl 2,4-Difluorobenzoate CAS 108928-00-3
| CAS No. | 108928-00-3 |
| Molecular Formula | C9H8F2O2 |
| Molecular Weight | 186.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 186.16 g/mol gives Ethyl 2,4-Difluorobenzoate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 2,4-Difluorobenzoate (CAS 108928-00-3), molecular formula C9H8F2O2 and molecular weight 186.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H8F2O2, Ethyl 2,4-Difluorobenzoate contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 186.16 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).
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 | C9H8F2O2 |
| Molecular Weight | 186.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
Related Ethyl Standards
- Ethyl 3,4-difluorobenzoate (CAS 144267-96-9)
- Ethyl 2,6-Difluorobenzoate (CAS 19064-14-3)
- Ethyl 2,3-difluorobenzoate (CAS 773134-65-9)
- Ethyl 2,5-Difluorobenzoate (CAS 708-25-8)
- Ethyl 3,5-difluorobenzoate (CAS 350-19-6)
- Sodium 2,5-difluorobenzoate (CAS 522651-42-9)
- Sodium 3,5-difluorobenzoate (CAS 530141-39-0)
- Methyl 2,4-difluorobenzoate (CAS 106614-28-2)
Recommended Standards
- 2-Amino-4,5-difluoro-n-methylbenzamide (CAS 1042434-87-6)
- 2-[4-(difluoromethoxy)phenyl]oxirane (CAS 1094302-44-9)
- 2,2-Difluoro-2-(m-tolyl)acetic acid (CAS 1038247-17-4)
- 2,2-Difluoro-1-(4-methoxyphenyl)ethanone (CAS 114829-07-1)
- 2-(2,4,6-Trifluorophenyl)propan-2-ol (CAS 1521018-79-0)
- 3-[2-(4-methoxyphenyl)ethenyl]-5-methyl-1,2-oxazol-4-amine (CAS 924860-58-2)
- 6-OXO-[1,4]OXAZEPANE-4,5-DICARBOXYLIC ACID 4-TERT-BUTYL ESTER 5-ETHYL ESTER (CAS 1330763-23-9)
- Methyl 2-amino-6-fluoro-1,3-benzoxazole-5-carboxylate (CAS 1820665-90-4)
- 3-(3-amino-4-methylphenyl)-1,3-oxazolidin-2-one (CAS 1038283-05-4)
- (5-Fluoroquinolin-4-yl)boronic acid (CAS 2813231-49-9)
- 4-({[4-(trifluoromethoxy)phenyl]amino}methylidene)-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 338394-38-0)
- 6a-Bromo Androstenedione (CAS 61145-67-3)
- Ethyl 5-amino-1-phenethylpyrazole-4-carboxylate (CAS 252903-25-6)
- Tau Peptide (379-408) trifluoroacetate salt (CAS 1246357-53-8)
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