2-Ethoxy-3,5-difluorobenzoyl chloride CAS 1017779-72-4
| CAS No. | 1017779-72-4 |
| Molecular Formula | C9H7ClF2O2 |
| Molecular Weight | 220.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Ethoxy-3,5-difluorobenzoyl chloride (CAS 1017779-72-4), molecular formula C9H7ClF2O2 and molecular weight 220.60 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7ClF2O2, 2-Ethoxy-3,5-difluorobenzoyl chloride contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 220.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C9H7ClF2O2 |
| Molecular Weight | 220.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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/Cl-containing |
Related Ethoxy Standards
- 4-Ethoxy-3,5-difluorobenzoyl chloride (CAS 1017779-21-3)
- 3-Ethoxy-2,4-difluorobenzoyl chloride (CAS 1017779-90-6)
- 3-Ethoxy-2,6-difluorobenzoyl chloride (CAS 1092461-27-2)
- 4-Ethoxy-2,6-difluorobenzoyl chloride (CAS 1373920-79-6)
- 4-Ethoxy-2,3-difluorobenzoyl chloride (CAS 761459-04-5)
- (8-Ethoxy-1-methyl-1,2,3,4-tetrahydroquinolin-3-yl)methanamine (CAS 1502058-65-2)
- 1-(4-Ethoxy-2-methylphenyl)piperazine (CAS 817170-68-6)
- 4-Ethoxy-2-propyl-3,4-dihydro-2H-pyrido[1,2-a]pyrimidine (CAS 210159-52-7)
Recommended Standards
- Dimethyl (4-chlorophenyl)phosphonate (CAS 13114-07-3)
- 1-(2-Chloropropanoyl)-5-fluoropyrimidine-2,4(1H,3H)-dione (CAS 110073-44-4)
- Ethyl 3-chloro-2,4-difluorobenzoate (CAS 1097886-66-2)
- Chlorodimethyl(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)silane (CAS 929887-16-1)
- (1R,2R)-2-(1-Piperidinyl)cyclohexylamine (CAS 885677-91-8)
- Rel-methyl (1s,3s)-3-(chlorosulfonyl)cyclobutane-1-carboxylate (CAS 1932811-28-3)
- 7-Amino-8-hydroxyquinoline-5-sulfonic acid hydrate (CAS 467446-71-5)
- 2-((Tert-butoxycarbonyl)amino)-7-oxaspiro[3.5]Nonane-5-carboxylic acid (CAS 2306272-66-0)
- Methyl 4-fluoro-3-isobutyramidobenzoate (CAS 1090594-34-5)
- (4-Methoxyphenyl)carbamic acid (CAS 36359-20-3)
- 4,4,6-Trimethyl-2-vinyl-1,3,2-dioxaborinane (CAS 4627-10-5)
- 1-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)-3-methylbutan-1-amine hydrochloride (CAS 1179491-42-9)
- 2-Chloropyrido[3,2-d]pyrimidin-4(3H)-one (CAS 2031259-38-6)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com