Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate CAS 1443333-88-7
| CAS No. | 1443333-88-7 |
| Molecular Formula | C13H16ClFO3 |
| Molecular Weight | 274.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate.
Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate (CAS 1443333-88-7), molecular formula C13H16ClFO3 and molecular weight 274.72 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system, Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 274.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Ethyl 5-(4-chloro-2-fluorophenoxy)pentanoate 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 | C13H16ClFO3 |
| Molecular Weight | 274.72 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 chloroform, dichloromethane, ethyl acetate, 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.) | 1992 |
| Halogen Content | F/Cl-containing |
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- 3-Chloro-7-isopropoxy-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1437434-27-9)
- Ethyl 5-(2-chloro-4-fluorophenoxy)pentanoate (CAS 1443322-98-2)
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Recommended Standards
- Ethyl 5-(4-chloro-3-fluorophenoxy)pentanoate (CAS 1443342-43-5)
- tert-Butyl 2-(2-chloro-5-fluorobenzyl)hydrazinecarboxylate (CAS 1260879-80-8)
- Ethyl 5-(3-chloro-2-fluorophenoxy)pentanoate (CAS 1443342-67-3)
- Ethyl 5-(2-chloro-5-fluorophenoxy)pentanoate (CAS 1443345-04-7)
- (4-Aminobenzo[d]oxazol-2-yl)methanol (CAS 1159528-49-0)
- 2-Amino-1-(4-chloro-3-fluorophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile (CAS 1308610-67-4)
- 7-Methoxy-2-methyl-4-nitrobenzofuran (CAS 89228-70-6)
- 2-(Azetidin-2-yl)aceticacid (CAS 92992-28-4)
- ethyl 2-nitro-2-(3-oxocyclohexyl)acetate (CAS 1353763-37-7)
- Ethyl (4,5-dimethyl-2-nitrophenyl)carbamate (CAS 199189-73-6)
- N-(4-Amino-1,2,5-oxadiazol-3-yl)acetamide (CAS 140706-47-4)
- cis-2-Fluoro-[1,1-bi(cyclopropane)]-1-carboxylic acid (CAS 1706430-81-0)
- (S)-3-Methyl-5-(1-methylpyrrolidin-3-yl)isoxazole (CAS 226088-59-1)
- Insulin Degludec impurity 4 (CAS CATO-C4X-21574)
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