2-(4-Chloro-2-hydroxyphenoxy)acetic acid CAS 7417-89-2
| CAS No. | 7417-89-2 |
| Molecular Formula | C8H7ClO4 |
| Molecular Weight | 202.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(4-Chloro-2-hydroxyphenoxy)acetic acid (CAS 7417-89-2), molecular formula C8H7ClO4 and molecular weight 202.59 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-Chloro-2-hydroxyphenoxy)acetic acid (C8H7ClO4) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2-(4-Chloro-2-hydroxyphenoxy)acetic 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 | C8H7ClO4 |
| Molecular Weight | 202.59 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.) | 1959 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-1-(2,4,6-trihydroxyphenyl)ethanone (CAS 110865-03-7)
- 3-Chloro-2-hydroxy-5-methoxybenzoic acid (CAS 1245532-48-2)
- Ethyl 3-chloro-2-oxo-2H-pyran-5-carboxylate (CAS 126703-76-2)
- 2-Chloro-4-(difluoromethyl)-6-methylnicotinonitrile (CAS 1271473-78-9)
- 4-Chloro-2-(difluoromethyl)-1H-pyrrolo[3,2-c]pyridine (CAS 1297611-15-4)
- Methyl 3-chloro-4,5-dihydroxybenzoate (CAS 132496-77-6)
- 4-Chloro-2-(difluoromethyl)-1H-benzo[d]imidazole (CAS 1342424-21-8)
- 5-Chloro-4-(trifluoromethyl)-2-thiazolamine (CAS 134880-91-4)
Recommended Standards
- 2-(3-Chloro-4-hydroxyphenyl)-2-hydroxyacetic acid (CAS 72198-15-3)
- 2-(5-Chloro-2-hydroxyphenoxy)acetic acid (CAS 328104-87-6)
- 2-(2-Chloro-4-hydroxyphenoxy)acetic acid (CAS 7417-87-0)
- 3-Chloro-4-hydroxy-5-methoxybenzoic acid (CAS 62936-23-6)
- n-((Tetrahydrofuran-2-yl)methyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 1073355-09-5)
- 3,5-bis(trifluoromethyl)phenyl benzimidazole (CAS 1280585-62-7)
- 3-Ethynyl-6-(piperidin-1-yl)pyridazine (CAS 1708269-15-1)
- 2-methyl-1-(1-methyl-1H-imidazol-2-yl)propan-1-one (CAS 138536-17-1)
- 5-(Methoxycarbonyl)-2-methylbenzoic acid (CAS 65399-17-9)
- 1-Oxo-1-phenylbutan-2-yl 8-methyl-2-phenylquinoline-4-carboxylate (CAS 355429-34-4)
- (1E,4E)-1-(dimethylamino)-5-(furan-2-yl)penta-1,4-dien-3-one (CAS 109482-98-6)
- 2-Boc-6-oxo-2-azabicyclo[2.2.1]heptane (CAS 198835-04-0)
- PTB7 / PCE9 (CAS 1237479-39-8)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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