2-(2-Chloro-4-methylphenoxy)acetic acid CAS 583-23-3
| CAS No. | 583-23-3 |
| Molecular Formula | C9H9ClO3 |
| Molecular Weight | 200.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-(2-Chloro-4-methylphenoxy)acetic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-(2-Chloro-4-methylphenoxy)acetic acid (CAS 583-23-3), molecular formula C9H9ClO3 and molecular weight 200.62 g/mol, is a CATO reference standard with documented purity and traceability.
2-(2-Chloro-4-methylphenoxy)acetic acid (C9H9ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C9H9ClO3 |
| Molecular Weight | 200.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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.) | 1957 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- 5-Chloro-6-(ethylamino)pyridine-3-carboxylic acid (CAS 1019461-54-1)
- 2-Chloro-6-ethoxybenzoic acid (CAS 1020998-62-2)
- Methyl 2-Chloro-5-(Methylamino)Isonicotinate (CAS 1034131-90-2)
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- 1-(3-Chloro-2-hydroxy-5-(hydroxymethyl)phenyl)ethanone (CAS 109201-11-8)
- 6- Chloro- 2- ethylaminonicotinic Acid (CAS 1092523-21-1)
- 5-chloro-4-methoxy-2-methylbenzoic acid (CAS 109803-47-6)
Recommended Standards
- 2-(2-Chloro-3-methylphenoxy)acetic acid (CAS 579-65-7)
- 2-(2-Chloro-5-methoxyphenyl)acetic acid (CAS 91367-10-1)
- 2-(2-chloro-3-methoxyphenyl)acetic acid (CAS 78141-77-2)
- 2-(2-Chlorophenoxy)acetohydrazide (CAS 36304-40-2)
- (4-(3,3-Dimethylbutanamido)phenyl)boronic acid (CAS 2246887-09-0)
- (1R,2S)-2-phenylcyclobutan-1-amine (CAS 1820580-39-9)
- 5-(aminomethyl)-6-methylpyridine-3-sulfonamide hydrochloride (CAS 1909324-86-2)
- (6-Methylpyridin-3-yl)(3-phenoxyphenyl)methanone (CAS 1187170-15-5)
- (E)-1-(Phenyldiazenyl)ethan-1-one (CAS 1129280-02-9)
- S-(2-(dimethylamino)ethyl) butanethioate (CAS 63512-62-9)
- 2-[4-(Ethylsulfamoyl)phenyl]acetamide (CAS 1792223-94-9)
- 2-Tetradecenal (CAS 64461-99-0)
- (1-Aminocyclohexyl)(morpholino)methanone hydrochloride (CAS 1181458-93-4)
- Tau Peptide (274-288) trifluoroacetate salt (CAS 330456-39-8)
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