(3,5-Dibromo-2-hydroxyphenyl)acetic acid CAS 21891-69-0
| CAS No. | 21891-69-0 |
| Molecular Formula | C8H6Br2O3 |
| Molecular Weight | 309.94 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.
CATO supplies (3,5-Dibromo-2-hydroxyphenyl)acetic acid (CAS 21891-69-0), a certified reference material (molecular formula C8H6Br2O3, MW 309.94 g/mol) for analytical method development and quality control.
The molecular framework of (3,5-Dibromo-2-hydroxyphenyl)acetic acid (C8H6Br2O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), (3,5-Dibromo-2-hydroxyphenyl)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 | C8H6Br2O3 |
| Molecular Weight | 309.94 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 |
| 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.) | 1963 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,5-Dibromo-2-hydroxy-4-methoxybenzaldehyde (CAS 117238-61-6)
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Recommended Standards
- Methyl 5-amino-4,6-dibromopicolinate (CAS 1935587-27-1)
- 1-(3,5-Dibromo-2,4-dihydroxyphenyl)ethan-1-one (CAS 36772-98-2)
- 4,5-Dibromo-2-(2-oxopropyl)-2,3-dihydropyridazin-3-one (CAS 186792-10-9)
- 2-(3,5-Dibromo-4-hydroxyphenyl)acetic acid (CAS 24744-58-9)
- 3-(5-Carboxypentyl)-1,1,2-trimethyl-1H-benzo[e]indol-3-ium iodide (CAS 870995-55-4)
- 4,4'-Methylenebis(2-ethyl-3-methylaniline) (CAS 1632285-94-9)
- 2-Amino-2’,4’-difluoroacetophenone Hydrochloride (CAS 786719-60-6)
- Ethyl 5-(tert-butyl)-2-methylfuran-3-carboxylate (CAS 38453-94-0)
- 1-(4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)-2-(methylamino)ethan-1-one (CAS 900640-78-0)
- 6-Fluoro-3-methylimidazo[1,2-a]pyridine (CAS 1552499-10-1)
- 5-Cyclopropylpyridazin-4-amine (CAS 1494041-13-2)
- 3-methoxyspiro[3.3]heptane-1-carbaldehyde (CAS 1935944-63-0)
- 2,7-Dibromophenanthrene (CAS 62325-30-8)
- [His]1-Acetylated Semaglutide (CAS CATO-C4X-2226219)
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