2,3-Dichloro-4-hydroxy-5-methoxybenzoic acid CAS 108544-97-4
| CAS No. | 108544-97-4 |
| Molecular Formula | C8H6Cl2O4 |
| Molecular Weight | 237.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 237.04 g/mol gives 2,3-Dichloro-4-hydroxy-5-methoxybenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2,3-Dichloro-4-hydroxy-5-methoxybenzoic acid (CAS 108544-97-4), molecular formula C8H6Cl2O4 and molecular weight 237.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2,3-Dichloro-4-hydroxy-5-methoxybenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 237.04 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), 2,3-Dichloro-4-hydroxy-5-methoxybenzoic 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 | C8H6Cl2O4 |
| Molecular Weight | 237.04 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.) | 1988 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- (4,5-Dichloro-6-oxopyridazin-1(6H)-yl)methyl acetate (CAS 97137-15-0)
- 2-(2,4-Dichloro-5-hydroxyphenoxy)acetic Acid (CAS 2639-79-4)
- 2,6-Dichloro-3-hydroxy-4-methoxybenzoic acid (CAS 773870-39-6)
- 3,5-Dichloro-2-hydroxy-6-methoxybenzoic acid (CAS 89894-57-5)
- Methyl 2-(4,5-dichloro-6-oxopyridazin-1(6H)-yl)acetate (CAS 220967-67-9)
- Methyl 2,6-dichloro-5-methoxypyrimidine-4-carboxylate (CAS 878650-31-8)
- Methyl 4,5-dichloro-2,3-dihydroxybenzoate (CAS 819800-61-8)
- 2-(4,6-Dichloro-2-(difluoromethyl)pyridin-3-yl)acetonitrile (CAS 1803670-91-8)
Recommended Standards
- 1-(2-iodoethenyl)pyrrolidin-2-one (CAS 1040743-30-3)
- 6-Bromo-2,3-difluorophenetole (CAS 1122410-43-8)
- 1-bromo-4-(difluoromethoxy)-2-methylbenzene (CAS 1021172-76-8)
- 5-Bromo-2-ethoxy-1,3-difluorobenzene (CAS 115467-04-4)
- 1-(3,5-Dimethylphenyl)-1-propanol (CAS 1183794-86-6)
- (1S,5R)-1-(2-chloro-4-fluorophenyl)-3-azabicyclo[3.1.0]Hexane hydrochloride (CAS 2231770-85-5)
- Methyl 2-cyano-4-methoxy-benzoate (CAS 22246-21-5)
- 1-Ethynyl-2-methyl-3-(trifluoromethyl)benzene (CAS 2029239-28-7)
- Sildenafil Impurity 254 (CAS 479074-08-3)
- Brexpiprazole Impurity 136 (CAS 2657666-89-0)
- (6-Fluoro-[1,1'-biphenyl]-3-yl)methanamine (CAS 1181566-38-0)
- (Z)-Bis[2-(1-isoquinolyl)phenyl][(4-oxo-2-penten-2-yl)oxy]iridium (CAS 435294-03-4)
- tert-Butyl (4-(hydroxymethyl)piperidin-4-yl)carbamate (CAS 1262408-81-0)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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