1-(4-Bromo-3-methylphenyl)-4-chloro-1H-pyrazole CAS 2379321-99-8
| CAS No. | 2379321-99-8 |
| Molecular Formula | C10H8BrClN2 |
| Molecular Weight | 271.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(4-Bromo-3-methylphenyl)-4-chloro-1H-pyrazole (CAS 2379321-99-8), molecular formula C10H8BrClN2 and molecular weight 271.54 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-(4-Bromo-3-methylphenyl)-4-chloro-1H-pyrazole (C10H8BrClN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 1-(4-Bromo-3-methylphenyl)-4-chloro-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.) | 1999 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-[(4-chlorophenyl)methyl]-1h-pyrazole (CAS 1006538-60-8)
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Recommended Standards
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- methyl 1H-pyrrolo[2,3-c]pyridine-7-carboxylate (CAS 945840-73-3)
- Cis-3-benzyloxymethylcyclobutanol (CAS 172324-68-4)
- 2-Amino-6-tert-butyl-4-(2-chlorophenyl)pyridine-3-carbonitrile (CAS 344264-44-4)
- 4-((1-(Pyridin-2-yl)ethyl)amino)butan-2-ol (CAS 1342157-58-7)
- (S)-tert-Butyl 2-(1H-imidazol-2-yl)pyrrolidine-1-carboxylate, 97% (CAS 1007882-58-7)
- 3-Amino-6-bromo-2,3-dihydrobenzofuran (CAS 944709-63-1)
- 1-Chloro-3-methylnaphthalene (CAS 132277-09-9)
- (Asn5)-Delta-Sleep Inducing Peptide (H-2555.0005) (CAS 80064-67-1)
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