2-(3,4-Dichlorophenoxy) Acetyl Chloride CAS 20143-45-7
| CAS No. | 20143-45-7 |
| Molecular Formula | C8H5Cl3O2 |
| Molecular Weight | 239.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 239.48 g/mol gives 2-(3,4-Dichlorophenoxy) Acetyl Chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(3,4-Dichlorophenoxy) Acetyl Chloride (CAS 20143-45-7) is a high-purity analytical reference standard with the molecular formula C8H5Cl3O2 and a molecular weight of 239.48 g/mol.
Structurally, 2-(3,4-Dichlorophenoxy) Acetyl Chloride (C8H5Cl3O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 239.48 g/mol, it falls into the medium-molecular-weight range. 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), 2-(3,4-Dichlorophenoxy) Acetyl Chloride 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 | C8H5Cl3O2 |
| Molecular Weight | 239.48 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.) | 1962 |
| Halogen Content | Cl-containing |
Related Dichlorophenoxy Standards
- (2,3-Dichlorophenoxy)acetyl chloride (CAS 85630-84-8)
- (2,5-Dichlorophenoxy)acetyl chloride (CAS 55502-51-7)
- 2-(2,4-Dichlorophenoxy)acetyl chloride (CAS 774-74-3)
- 2-(2,6-Dichlorophenoxy)acetyl chloride (CAS 20143-46-8)
- 2-(2,4-Dichlorophenoxy)-N-hydroxyacetamide (CAS 13359-22-3)
- (±)-2-(2,4-Dichlorophenoxy-d3)propionic Acid (CAS 1219803-66-3)
- Methyl (2,4-Dichlorophenoxy-d3)acetate (CAS 358731-20-1)
- 2-(3,5-Dichlorophenoxy)ethanethioamide (CAS 119024-27-0)
Recommended Standards
- 2,3,5-Trichloro-4-methylbenzoic acid (CAS 89978-34-7)
- 2,4,6-Trichloro-3-methoxybenzaldehyde (CAS 704899-49-0)
- 2-(2,4,6-Trichlorophenyl)acetic acid (CAS 29277-00-7)
- 3,5-Dichloro-4-methoxybenzoyl Chloride (CAS 29568-76-1)
- Phenelfamycin E (CAS 114451-31-9)
- UF010, 98% (CAS 537672-41-6)
- Methyl-[1-(4-methyl-benzyl)-piperidin-3-yl]-amine hydrochloride (CAS 1353966-83-2)
- Ethyl 1,3-dimethyl-2-oxopyrrolidine-3-carboxylate (CAS 71172-95-7)
- 1-((3,5-Dimethyl-1H-pyrazol-1-yl)methyl)-3,5-dimethyl-4-nitro-1H-pyrazole (CAS 1001519-02-3)
- Lemborexant Impurity 89 (CAS 3070371-44-4)
- Methyl 2-((3-cyano-4-(4-fluorophenyl)pyridin-2-yl)thio)benzoate (CAS 478245-93-1)
- (S)-1-(4-methyl-1-phenyl-1H-benzo[d]imidazol-2-yl)ethan-1-amine (CAS 1393175-99-9)
- 2-((2,4-Difluorobenzyl)amino)propane-1,3-diol (CAS 1495110-95-6)
- Semaglutide impurity 214 (CAS CATO-C4X-2226214)
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