Ethyl 4-Bromo-3-hydroxybenzoate CAS 33141-66-1
| CAS No. | 33141-66-1 |
| Molecular Formula | C9H9BrO3 |
| Molecular Weight | 245.07 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.
Ethyl 4-Bromo-3-hydroxybenzoate (CAS 33141-66-1), molecular formula C9H9BrO3 and molecular weight 245.07 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 4-Bromo-3-hydroxybenzoate (C9H9BrO3) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Ethyl 4-Bromo-3-hydroxybenzoate 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 | C9H9BrO3 |
| Molecular Weight | 245.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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.) | 1966 |
| Halogen Content | Br-containing |
Related Ethyl Standards
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Recommended Standards
- Ethyl 3-bromo-6-methylpyrazine-2-carboxylate (CAS 908833-98-7)
- Ethyl 4-Bromosalicylate (CAS 314240-85-2)
- Ethyl 3-bromo-5-methylpyrazine-2-carboxylate (CAS 2090265-25-9)
- Ethyl 5-bromo-2-hydroxybenzoate (CAS 37540-59-3)
- 4-(tert-Butoxycarbonyl)-1-(thiazol-2-yl)piperazine-2-carboxylic acid (CAS 1261229-95-1)
- 5-Ethynyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 905581-05-7)
- Methyl 3-cyano-4-hydroxy-5-iodobenzoate (CAS 1285574-72-2)
- 3-(2,3-Dimethylphenyl)-1-(3-(trifluoromethyl)phenyl)propan-1-one (CAS 898793-07-2)
- (R)-1-(Pyrimidin-2-yl)pyrrolidin-3-ol (CAS 181959-76-2)
- Ivermectin B1b (CAS 70209-81-3)
- Edoxaban Impurity 122 (CAS CATO-C4X-1063122)
- 2-[(trifluoromethyl)sulfanyl]pyridine (CAS 57830-49-6)
- 5-Chloro-2-(1h-pyrrol-1-yl)aniline (CAS 15814-76-3)
- Tirzepatide Impurity 14 (CAS CATO-C4X-324014)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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