2-(3,4-Dichlorophenyl)-2-methoxyacetic acid CAS 13911-20-1
| CAS No. | 13911-20-1 |
| Molecular Formula | C9H8Cl2O3 |
| Molecular Weight | 235.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(3,4-Dichlorophenyl)-2-methoxyacetic acid (CAS 13911-20-1), molecular formula C9H8Cl2O3 and molecular weight 235.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(3,4-Dichlorophenyl)-2-methoxyacetic acid (C9H8Cl2O3) 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 235.06 g/mol, it falls into the medium-molecular-weight range. 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).
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.
As a certified reference material (CRM), 2-(3,4-Dichlorophenyl)-2-methoxyacetic 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 | C9H8Cl2O3 |
| Molecular Weight | 235.06 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.) | 1960 |
| Halogen Content | Cl-containing |
Related Dichlorophenyl Standards
- Methyl 2-(2,3-dichlorophenyl)-2-hydroxyacetate (CAS 1247786-03-3)
- Methyl 2-(3,5-dichlorophenyl)-2-hydroxyacetate (CAS 1249705-88-1)
- 3-(3,5-Dichlorophenyl)-3-hydroxypropanoic acid (CAS 1250810-15-1)
- 3-(2,3-Dichlorophenyl)-3-hydroxypropanoic acid (CAS 1251330-76-3)
- 3-(2,5-Dichlorophenyl)-2-hydroxypropanoic acid (CAS 1496812-06-6)
- 3-(2,6-Dichlorophenyl)-2-hydroxypropanoic acid (CAS 1508654-31-6)
- 3-(3,5-Dichlorophenyl)-2-hydroxypropanoic acid (CAS 1511336-39-2)
- 2,4-Dichlorophenyl ethyl carbonate (CAS 22876-28-4)
Recommended Standards
- 4-Bromo-2-formylthiophene-3-carboxylic acid (CAS 1334640-34-4)
- 5-Bromo-2-formylthiophene-3-carboxylic acid (CAS 1397285-28-7)
- (2,4-Dichloro-6-methylphenoxy)acetic acid (CAS 13333-87-4)
- Ethyl 2,4-dichloro-6-hydroxybenzoate (CAS 132629-98-2)
- 1-Iodo-2-(methylsulfinyl)benzene (CAS 71545-38-5)
- Ethyl 6-(4-chloro-2-fluorophenyl)-6-oxohexanoate (CAS 951886-40-1)
- Methyl 4-formyl-2-nitrobenzoate (CAS 551959-56-9)
- Methyl 2-(4-aminopiperidin-1-yl)pyridine-4-carboxylate hydrochloride (CAS 1375474-75-1)
- 3,5-Dichloro-2-fluorobenzenesulfonamide (CAS 1806302-27-1)
- 5,6-Dimethyl-2-(pyridin-4-yl)-1H-benzo[d]imidazole (CAS 64263-00-9)
- tert-Butyl (R)-(3-methylpyrrolidin-3-yl)carbamate hydrochloride (CAS 2222683-65-8)
- 2-(3-Bromo-4-cyano-5-fluorophenyl)acetic acid (CAS 1805188-30-0)
- 2-Methyl-1H-indol-3-ol (CAS 857799-85-0)
- DAPK Substrate Peptide (CAS 386769-53-5)
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