Ethyl 1-(2-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate CAS 1820703-80-7
| CAS No. | 1820703-80-7 |
| Molecular Formula | C13H13BrN2O2 |
| Molecular Weight | 309.16 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 1-(2-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate.
Ethyl 1-(2-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate (CAS 1820703-80-7), molecular formula C13H13BrN2O2 and molecular weight 309.16 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 1-(2-bromophenyl)-5-methyl-1H-pyrazole-3-carboxylate (C13H13BrN2O2) 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. 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 1-(2-bromophenyl)-5-methyl-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 | C13H13BrN2O2 |
| Molecular Weight | 309.16 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 |
| 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.) | 1995 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
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- 1-[(3-bromophenyl)methyl]-3,5-dimethyl-1H-pyrazole-4-carboxylic acid (CAS 1153371-57-3)
- 1-(4-Bromophenyl)-3,5-dimethyl-1H-pyrazole-4-carbohydrazide (CAS 1227954-57-5)
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Recommended Standards
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- 2-Bromo-11H-benzo[b]fluoren-11-one (CAS 1923756-29-9)
- 2-((4-Bromo-1H-pyrazol-1-yl)methoxy)-4,6-dimethylbenzaldehyde (CAS 1707667-44-4)
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- 4-(1-Naphthyl)phenylboronic Acid (CAS 870774-25-7)
- 2-(4-Chloro-3,5-dimethylphenyl)-3-methylbutan-2-ol (CAS 1443306-77-1)
- (1S,5R)-2-azabicyclo[3.1.0]Hexane-1-carboxylic acid hydrochloride (CAS 1212477-19-4)
- 3-(4-Chlorophenyl)-2,5-dimethylpropiophenone (CAS 898788-00-6)
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- 4-Bromo-1,2-diiodobenzene (CAS 21521-54-0)
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