Ethyl 1-(4-bromophenyl)-1H-pyrazole-4-carboxylate CAS 138907-76-3
| CAS No. | 138907-76-3 |
| 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 1-(4-bromophenyl)-1H-pyrazole-4-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.
CATO supplies Ethyl 1-(4-bromophenyl)-1H-pyrazole-4-carboxylate (CAS 138907-76-3), a certified reference material (molecular formula C12H11BrN2O2, MW 295.13 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, Ethyl 1-(4-bromophenyl)-1H-pyrazole-4-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 295.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.) | 1996 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
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- Ethyl 5-(4-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1048930-76-2)
- 1-(4-Bromophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 113808-88-1)
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Recommended Standards
- 1-[(3-bromophenyl)methyl]-3-methyl-1h-pyrazole-4-carboxylic acid (CAS 1375471-47-8)
- 2-((6-Bromonaphthalen-2-yl)oxy)propanoic acid (CAS 141791-37-9)
- 2-(5-Bromo-6-methoxynaphthalen-2-yl)acetic acid (CAS 1373247-55-2)
- Methyl 3-(4-bromophenyl)-5-methyl-1H-pyrazole-4-carboxylate (CAS 1423700-49-5)
- 6-Amino-2-fluoro-3,4-dinitrotoluene (CAS 1082041-94-8)
- Alloxantin Dihydrate (CAS 6011-27-4)
- 5-Methyl-2-phenyl-1H-imidazo[4,5-b]pyridine (CAS 88406-57-9)
- N,N-Diethyl-4-(piperidine-1-carbonyl)benzenesulfonamide (CAS 433314-05-7)
- 3,5-Dinitro-N-(1,1,1-trifluoropropan-2-yl)benzamide (CAS 304458-26-2)
- 2-Hydroxy-5-(thiophen-3-yl)pyridine-3-carboxylic acid (CAS 1262004-20-5)
- 1-(3-Aminoquinolin-7-yl)ethan-1-one (CAS 1958063-12-1)
- Sodium-11-acrylamido-undecanoate (CAS 91777-68-3)
- 2-(Benzyloxy)-1-bromo-3-nitrobenzene (CAS 688363-79-3)
- Tirzepatide-d7 Ditrifluoroacetate (CAS CATO-CPTD788698)
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