Ethyl 5-bromo-1-(2,4-dichlorophenyl)-4-formyl-1H-pyrazole-3-carboxylate CAS 1353011-83-2
| CAS No. | 1353011-83-2 |
| Molecular Formula | C13H9BrCl2N2O3 |
| Molecular Weight | 392.03 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 Ethyl 5-bromo-1-(2,4-dichlorophenyl)-4-formyl-1H-pyrazole-3-carboxylate.
Ethyl 5-bromo-1-(2,4-dichlorophenyl)-4-formyl-1H-pyrazole-3-carboxylate (CAS 1353011-83-2) is a high-purity analytical reference standard with the molecular formula C13H9BrCl2N2O3 and a molecular weight of 392.03 g/mol.
The molecular framework of Ethyl 5-bromo-1-(2,4-dichlorophenyl)-4-formyl-1H-pyrazole-3-carboxylate (C13H9BrCl2N2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Ethyl 5-bromo-1-(2,4-dichlorophenyl)-4-formyl-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.
Physical & Chemical Properties
| Molecular Formula | C13H9BrCl2N2O3 |
| Molecular Weight | 392.03 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 4-(DIFLUOROMETHOXY)BUTAN-1-OL (CAS 863008-52-0)
- 1-(2-Aminoethoxy)-2-bromobenzene hydrochloride (CAS 1197628-85-5)
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- Palmitoyl hexapeptide-6 (CAS 891498-01-4)
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