4-Bromo-1-methyl-3,5-diphenyl-1H-pyrazole CAS 57389-74-9
| CAS No. | 57389-74-9 |
| Molecular Formula | C16H13BrN2 |
| Molecular Weight | 313.19 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 4-Bromo-1-methyl-3,5-diphenyl-1H-pyrazole.
4-Bromo-1-methyl-3,5-diphenyl-1H-pyrazole (CAS 57389-74-9) is a high-purity analytical reference standard with the molecular formula C16H13BrN2 and a molecular weight of 313.19 g/mol.
The molecular framework of 4-Bromo-1-methyl-3,5-diphenyl-1H-pyrazole (C16H13BrN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-Bromo-1-methyl-3,5-diphenyl-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 | C16H13BrN2 |
| Molecular Weight | 313.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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- N-[(1-Methyl-1H-pyrazol-5-yl)methyl]cyclopropanamine (CAS 1100954-26-4)
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- 2-Phenyl-5,6,7,8-tetrahydroquinazoline (CAS 100869-87-2)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com