2,4-Dibromo-6-hydroxybenzoic acid CAS 1666-27-9
| CAS No. | 1666-27-9 |
| Molecular Formula | C7H4Br2O3 |
| Molecular Weight | 295.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,4-Dibromo-6-hydroxybenzoic acid.
2,4-Dibromo-6-hydroxybenzoic acid (CAS 1666-27-9), molecular formula C7H4Br2O3 and molecular weight 295.91 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4Br2O3, 2,4-Dibromo-6-hydroxybenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 295.91 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), 2,4-Dibromo-6-hydroxybenzoic 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 | C7H4Br2O3 |
| Molecular Weight | 295.91 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.) | 1957 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2,5-Dibromo-4-hydroxybenzoic acid (CAS 101421-19-6)
- 3,5-Dibromo-2,4-dihydroxybenzaldehyde (CAS 116096-91-4)
- 2,3-Dibromo-4,5-dihydroxybenzaldehyde (CAS 14045-41-1)
- 2,4-Dibromo-5-hydroxybenzoic Acid (CAS 14348-39-1)
- 2,6-Dibromo-4-hydroxybenzoic acid (CAS 1935194-66-3)
- 2,4-Dibromo-3-hydroxybenzoic Acid (CAS 91659-00-6)
- 2,5-dibromo-3,4-dihydroxybenzaldehyde (CAS 70625-28-4)
- 3,5-Dibromo-4-Hydroxybenzoic Acid (CAS 3337-62-0)
Recommended Standards
- 3,5-Dibromosalicylic Acid (CAS 3147-55-5)
- 627-31-6 1,3-Diiodopropane Propane, 1,3-diiodo- 4-01-00-00228 (Beilstein Handbook Reference) AI3-52340 BRN 1731117 EINECS 210-993-4 NSC 35647 Trimethylene diiodide (CAS 627-31-6)
- 2,2-Diiodopropane (CAS 630-13-7)
- Methyl 3,5-dibromopyrazine-2-carboxylate (CAS 1035818-91-7)
- 2-(6-Chloropyridazin-3-yl)-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylic acid (CAS 1208089-53-5)
- 3-Bromo-4-chloro-1H-indole (CAS 1181332-74-0)
- 2-(Benzo[d][1,3]dioxol-5-yl)-1-oxo-1,2,3,6,7,7a-hexahydro-3a,6-epoxyisoindole-7-carboxylic acid (CAS 1212406-35-3)
- 4,5,6,7-Tetraphenylisobenzofuran-1,3(3aH,7aH)-dione (CAS 6971-41-1)
- (2E,4E,6E)-2,4,6-Nonatrienoic Acid Ethyl Ester (CAS 922528-07-2)
- 1-((Furan-2-ylmethyl)amino)-3-((2-methyl-1H-indol-4-yl)oxy)propan-2-ol (CAS 338392-17-9)
- 5-Nitro-2-[2-(4-piperidinyl)ethoxy]pyridinehydrochloride (CAS 1219967-30-2)
- (3-(3,3,3-Trifluoropropoxy)phenyl)methanamine (CAS 1341356-30-6)
- 1-(3,4-Dimethoxyphenyl)-4-hydroxy-5,6,7-trimethoxy-2-naphthoic acid (CAS 6305-51-7)
- Liraglutide Impurity 14 TFA Salt (CAS CATO-C4X-199214)
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