2,6-Dichloro-4-hydroxybenzoic Acid CAS 4641-38-7
| CAS No. | 4641-38-7 |
| Molecular Formula | C7H4Cl2O3 |
| Molecular Weight | 207.01 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.
2,6-Dichloro-4-hydroxybenzoic Acid (CAS 4641-38-7), molecular formula C7H4Cl2O3 and molecular weight 207.01 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, 2,6-Dichloro-4-hydroxybenzoic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 207.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 2,6-Dichloro-4-hydroxybenzoic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H4Cl2O3 |
| Molecular Weight | 207.01 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, water |
| 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.) | 1958 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 3,5-Dichloro-2,6-dihydroxybenzaldehyde (CAS 1204298-54-3)
- 3,5-Dichloro-2-nitroaniline (CAS 122584-83-2)
- 2,3-Dichloro-4,5-dihydroxybenzaldehyde (CAS 125001-04-9)
- 2,6-Dichloro-3-nitroaniline (CAS 13785-48-3)
- 3,4-Dichloro-2-hydroxybenzoic acid (CAS 14010-45-8)
- 2,6-Dichloro-5-methoxypyrimidine-4-carbaldehyde (CAS 1446253-05-9)
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- 2,5-Dichloro-3,4-dihydroxybenzaldehyde (CAS 152354-09-1)
Recommended Standards
- 2,6-Dichloro-3-methyl-4-nitropyridine (CAS 2089315-05-7)
- 2,6-Dichloro-4-methyl-3-nitropyridine (CAS 60010-03-9)
- 2,6-Dichloro-3-hydroxybenzoic acid (CAS 4641-37-6)
- 3,4-Dichloro-2-nitro-benzenamine (CAS 958804-40-5)
- N-(3-(benzyloxy)pyridin-2-yl)-N-cyclobutylformamide (CAS 1024219-85-9)
- (Z)-4-((tert-butyldimethylsilyl)oxy)but-2-en-1-ol (CAS 113123-37-8)
- Fmoc-Ala-Gly-OH (CAS 116747-54-7)
- 1-(Pyren-2-yl)ethanone (CAS 789-06-0)
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- Acid orange 156 (CAS 68555-86-2)
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- 1,5-Dimethyl (2Z)-3-oxo-2-(2-phenylhydrazin-1-ylidene)pentanedioate (CAS 121582-45-4)
- [3-31]-Semaglutide D (Sodium salt) (CAS CATO-C4X-2226119)
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