Ethyl 5-(4-bromophenyl)-1H-pyrazole-3-carboxylate CAS 1048930-76-2
| CAS No. | 1048930-76-2 |
| Molecular Formula | C12H11BrN2O2 |
| Molecular Weight | 295.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ethyl 5-(4-bromophenyl)-1H-pyrazole-3-carboxylate 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.
Ethyl 5-(4-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1048930-76-2), molecular formula C12H11BrN2O2 and molecular weight 295.13 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 5-(4-bromophenyl)-1H-pyrazole-3-carboxylate (C12H11BrN2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H11BrN2O2 |
| Molecular Weight | 295.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- 3-[5-(2-bromophenyl)furan-2-yl]propanoic acid (CAS 1018586-62-3)
- 3-(5-(3-Bromophenyl)furan-2-yl)propanoic acid (CAS 1018663-26-7)
- 1-(4-Bromophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 113808-88-1)
- 1-(4-Bromophenyl)-5-ethyl-1h-pyrazole-4-carboxylic acid (CAS 1152881-97-4)
- Ethyl 5-(4-bromophenyl)-1h-pyrazole-4-carboxylate (CAS 1242015-23-1)
- Ethyl 1-(2-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 1245258-67-6)
- Ethyl 5-(3-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1326811-82-8)
- Methyl 2-(4-(4-bromophenyl)-1H-pyrazol-1-yl)acetate (CAS 1351382-69-8)
Recommended Standards
- 3-(4-Bromo-1-hydroxynaphthalen-2-yl)propanoic acid (CAS 1041267-08-6)
- 5-Bromo-N-(2-(pyridin-3-yl)ethyl)furan-2-carboxamide (CAS 1090440-16-6)
- 1-(5-Bromopyridin-2-yl)-2,5-dimethyl-1h-pyrrole-3-carboxylic acid (CAS 1152547-68-6)
- 4-Bromo-1-(4-methoxybenzyl)-1H-imidazole-5-carbaldehyde (CAS 101853-88-7)
- 5-Chloro-1-(3-chlorobenzyl)-N-(4-methoxyphenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 338977-35-8)
- 3-Amino-5-iodophenol (CAS 1243460-79-8)
- Orlistat Impurity 27 (CAS 1243011-56-4)
- 2-(Benzo[d]oxazol-2-ylthio)acetaldehyde (CAS 1248044-95-2)
- 1,5-Naphthyridine-3-carbonitrile (CAS 1142927-37-4)
- 5-Methyl-4-phenylthiophene-2-carboxylic acid (CAS 62404-08-4)
- Dodecyl glycinate (CAS 13827-65-1)
- 2-bromo-1-(4-chloro-2-methoxyphenyl)ethan-1-one (CAS 60208-06-2)
- Methyl 2-chloro-1H-indole-3-carboxylate (CAS 152812-42-5)
- D-Gln24-Tirzepatide (CAS CATO-CPTD788910)
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