3,5-Dichloro-2-hydroxy-6-methoxybenzoic acid CAS 89894-57-5
| CAS No. | 89894-57-5 |
| Molecular Formula | C8H6Cl2O4 |
| Molecular Weight | 237.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3,5-Dichloro-2-hydroxy-6-methoxybenzoic acid (CAS 89894-57-5), molecular formula C8H6Cl2O4 and molecular weight 237.04 g/mol, is a CATO reference standard with documented purity and traceability.
3,5-Dichloro-2-hydroxy-6-methoxybenzoic acid (C8H6Cl2O4) 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).
As a certified reference material (CRM), 3,5-Dichloro-2-hydroxy-6-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.) | 1982 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 2,3-Dichloro-4-hydroxy-5-methoxybenzoic acid (CAS 108544-97-4)
- (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)
- 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
- 2-Fluoro-4-(pyrrolidinylcarbonyl)phenylboronic acid (CAS 874289-25-5)
- 3-Bromo-2-(difluoromethyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (CAS 2248387-28-0)
- 2-Bromo-2,2-difluoro-1-phenylethan-1-ol (CAS 74492-28-7)
- 3-Bromo-5-(1,1-difluoroethyl)phenol (CAS 867366-88-9)
- Teleocidin B-2 (CAS 95189-05-2)
- 3-Amino-5-fluoro-2,3-dihydro-1h-inden-1-one (CAS 117291-49-3)
- Verbascoside (CAS 61276-17-3)
- H-D-Glu(OBzl)-OH (CAS 2578-33-8)
- [2-bromo-6-fluoro-3-(trifluoromethyl)phenyl]trimethylsilane (CAS 2059938-34-8)
- Ursodeoxycholic Acid Impurity 2(Glycoursodeoxycholic Acid) (CAS 64480-66-6)
- Rosuvastatin Impurity 184 (CAS CATO-C4X-1169184)
- 2-(propan-2-yl)-4,5,6,7-tetrahydro-2H-indazol-6-amine (CAS 1394040-79-9)
- 5-Allyl-2-ethoxy-1,3-difluorobenzene (CAS 1379291-66-3)
- C-telopeptide (CAS 162929-64-8)
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