4-Ethoxy-2,5-difluorobenzoic acid CAS 1935223-46-3
| CAS No. | 1935223-46-3 |
| Molecular Formula | C9H8F2O3 |
| Molecular Weight | 202.15 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.
CATO supplies 4-Ethoxy-2,5-difluorobenzoic acid (CAS 1935223-46-3), a certified reference material (molecular formula C9H8F2O3, MW 202.15 g/mol) for analytical method development and quality control.
4-Ethoxy-2,5-difluorobenzoic acid (C9H8F2O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. It is notably hygroscopic, 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. 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).
As a certified reference material (CRM), 4-Ethoxy-2,5-difluorobenzoic acid 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 | C9H8F2O3 |
| Molecular Weight | 202.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.) | 1996 |
| Halogen Content | F-containing |
Related Ethoxy Standards
- 4-Ethoxy-3,5-difluorobenzoic acid (CAS 1017779-19-9)
- 2-Ethoxy-3,5-difluorobenzoic acid (CAS 1017779-70-2)
- 3-Ethoxy-2,4-difluorobenzoic acid (CAS 1017779-88-2)
- 4-Ethoxy-2,3-difluorobenzoic acid (CAS 124728-45-6)
- 3-Ethoxy-4,5-difluorobenzoic acid (CAS 1379315-07-7)
- 6-Ethoxy-2,3-difluorobenzoic acid (CAS 1431329-81-5)
- 2-Ethoxy-3,4-difluorobenzoic acid (CAS 1544715-58-3)
- 2-Ethoxy-4,5-difluorobenzoic acid (CAS 1557553-71-5)
Recommended Standards
- 2,6-Difluoro-3,5-dimethoxybenzaldehyde (CAS 1890954-24-1)
- Methyl 2,4-difluoro-3-methoxybenzoate (CAS 194804-79-0)
- 2-(2-(Difluoromethyl)phenoxy)acetic acid (CAS 1889400-31-0)
- (2,4-Difluorophenoxy)acetic Acid Methyl Ester (CAS 449811-63-6)
- 4-bromo-2-(bromomethyl)-1-(pentyloxy)benzene (CAS 1094273-06-9)
- 5-Benzyl-2-oxa-5-aza-bicyclo[2.2.2]octane-4-carboxylic acid (CAS 2379651-37-1)
- 3-(Isobutylthio)azetidine (CAS 1339255-19-4)
- ((Phenylthio)methyl)boronic acid (CAS 67975-88-6)
- 2-(3,3-Dimethylbutoxy)-2-phenylacetic acid (CAS 1498247-91-8)
- 1-(4-Bromophenyl)-2-((2,2-difluorovinyl)oxy)ethan-1-ol (CAS 1334145-94-6)
- Lead Cyanamidate (CAS 20837-86-9)
- 2-amino-4-methyl-1,3-thiazole-5-carbohydrazide (CAS 63788-59-0)
- 2-(1-Hydroxyethyl)-1H-benzo[d]imidazole-6-carboxylic acid (CAS 145126-54-1)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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