4-Ethoxy-3,5-difluorobenzamide CAS 1017779-23-5
| CAS No. | 1017779-23-5 |
| Molecular Formula | C9H9F2NO2 |
| Molecular Weight | 201.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethoxy-3,5-difluorobenzamide (CAS 1017779-23-5), molecular formula C9H9F2NO2 and molecular weight 201.17 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 4-Ethoxy-3,5-difluorobenzamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 4-Ethoxy-3,5-difluorobenzamide 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 | C9H9F2NO2 |
| Molecular Weight | 201.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ethoxy Standards
- 4-Ethoxy-2,3-difluorobenzamide (CAS 1017779-57-5)
- 2-Ethoxy-3,5-difluorobenzamide (CAS 1017779-74-6)
- 3-Ethoxy-2,4-difluorobenzamide (CAS 1017779-91-7)
- 3-Ethoxy-2,6-difluorobenzamide (CAS 1092461-26-1)
- 4-Ethoxy-2,6-difluorobenzamide (CAS 916483-57-3)
- 4-Ethoxy-5-fluoro-2,6-dioxohexahydropyrimidine-5-carbonitrile (CAS 65906-82-3)
- Methyl 1-ethoxy-4-hydroxy-5-oxo-2,5-dihydro-1H-pyrrole-3-carboxylate (CAS 724742-80-7)
- 2-Ethoxy-4-nitro-1H-imidazole-5-carboxylic acid (CAS 195817-91-5)
Recommended Standards
- N,N-diethyl-2,3,3,3-tetrafluoropropanamide (CAS 392-63-2)
- Dimethyl (3-aminophenyl)phosphonate (CAS 89277-83-8)
- (S)-1-Phosphono-2-phenylethylamine (CAS 66609-42-5)
- N-ethyl-2,2-difluorobenzo[d][1,3]dioxol-5-amine (CAS 1019553-29-7)
- 2-Imino-N-(3-methoxypropyl)-10-methyl-5-oxo-1-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 488708-69-6)
- 2-Cyclohexyl-1,3-dimethoxy-2-propanol (CAS 104431-10-9)
- 6-Chloro-1-methyl-2,3-dihydro-1h-indole-2-thione (CAS 156136-70-8)
- 6-Mercaptonaphthalen-2-ol (CAS 6088-50-2)
- Ethyl 4-methyl-2-(pyridin-3-yl)thiazole-5-carboxylate (CAS 39091-00-4)
- 2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)(methyl)amino)ethan-1-ol (CAS 263387-09-3)
- 3-Bromo-4-difluoromethoxy-5-fluorophenol (CAS 1807027-08-2)
- 1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl 1H-indole-3-acetate (CAS 145917-81-3)
- 1-(2-Phenylpropanoyl)piperidine-4-carboxylic acid (CAS 1211499-23-8)
- Nonapeptide-1 (CAS 158563-45-2)
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