1-(2-Bromo-5-chlorophenyl)-3-methyl-1H-pyrazole CAS 1125828-26-3
| CAS No. | 1125828-26-3 |
| Molecular Formula | C10H8BrClN2 |
| Molecular Weight | 271.54 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 1-(2-Bromo-5-chlorophenyl)-3-methyl-1H-pyrazole.
CATO supplies 1-(2-Bromo-5-chlorophenyl)-3-methyl-1H-pyrazole (CAS 1125828-26-3), a certified reference material (molecular formula C10H8BrClN2, MW 271.54 g/mol) for analytical method development and quality control.
Based on its molecular formula C10H8BrClN2, 1-(2-Bromo-5-chlorophenyl)-3-methyl-1H-pyrazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures 1-(2-Bromo-5-chlorophenyl)-3-methyl-1H-pyrazole 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 | C10H8BrClN2 |
| Molecular Weight | 271.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-[(4-chlorophenyl)methyl]-1h-pyrazole (CAS 1006538-60-8)
- 3-Bromo-7-chloro-2,4-dimethyl-1,8-naphthyridine (CAS 1021117-08-7)
- 1-(2-Bromo-5-chlorophenyl)-5-methyl-1H-pyrazole (CAS 1125828-28-5)
- 4-Bromo-1-(4-(chloromethyl)phenyl)-1H-pyrazole (CAS 1178169-30-6)
- 3-Bromo-8-chloro-2-methylquinolin-4-amine (CAS 1333256-71-5)
- 4-Bromo-2-chloro-1-cyclopropyl-1H-benzo[d]imidazole (CAS 1416713-06-8)
- 6-Bromo-2-chloro-1-cyclopropyl-1H-benzo[d]imidazole (CAS 1416714-37-8)
- 5-Bromo-1-(2-chlorobenzyl)-1H-pyrazole (CAS 1427011-39-9)
Recommended Standards
- 2,4,8-Trichlorodibenzofuran (CAS 54589-71-8)
- 3-(3-bromophenyl)-4-chloro-5-methyl-1H-pyrazole (CAS 1257858-65-3)
- 2,6,7-Trichlorodibenzofuran (CAS 83704-45-4)
- 2,4,7-Trichlorodibenzofuran (CAS 83704-42-1)
- 8-Fluoro-1-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 1092288-78-2)
- 3-(bromomethyl)-1-methyl-5,6-dihydro-4H-cyclopenta[c]pyrazole (CAS 2853613-08-6)
- 1-(2-Hydroxy-3,5-dimethylphenyl)-2-methylpropan-1-one (CAS 106141-17-7)
- 2-((5-Methylisoxazol-3-yl)amino)-2-oxoethyl 2H-chromene-3-carboxylate (CAS 923768-25-6)
- 3-Cyclopropoxy-2-ethyl-6-methylpyridine (CAS 1243376-43-3)
- N-(4-bromophenyl)-2-(naphthalen-1-yloxy)acetamide (CAS 331845-61-5)
- 2-Methyl-[1,2,4]triazolo[1,5-a]pyridine-6-carbaldehyde (CAS 1338072-38-0)
- 2-[4-(propan-2-yl)-1,3-thiazol-2-yl]acetonitrile (CAS 637015-75-9)
- rel-(3R,4S)-3-(4-Chlorophenyl)-4-nitro-1-(phenylmethyl)pyrrolidine (CAS 1073263-71-4)
- Calcitonin C-Terminal Flanking Peptide (human) XTFA (CAS 85916-47-8（free base）)
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