4-Bromo-5-methyl-3-phenyl-1H-pyrazole CAS 13808-66-7
| CAS No. | 13808-66-7 |
| Molecular Formula | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Bromo-5-methyl-3-phenyl-1H-pyrazole 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.
4-Bromo-5-methyl-3-phenyl-1H-pyrazole (CAS 13808-66-7), molecular formula C10H9BrN2 and molecular weight 237.10 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Bromo-5-methyl-3-phenyl-1H-pyrazole (C10H9BrN2) 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1960 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-bromo-2-cyclopropyl-1H-pyrrolo[2,3-b]pyridine (CAS 1014614-11-9)
- 1-Bromo-3-cyclopropylimidazo[1,5-a]pyridine (CAS 1018603-14-9)
- 3-Bromo-2,4-dimethyl-1,8-naphthyridine (CAS 1019108-06-5)
- 8-Bromo-2-methylquinolin-5-amine (CAS 1023815-94-2)
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- 4-Bromo-1-methyl-3-phenyl-1H-pyrazole (CAS 105994-55-6)
- 4-Bromo-1-methyl-5-phenyl-1H-pyrazole (CAS 105994-77-2)
- 4-Bromo-5-methyl-2-phenyl-1H-imidazole (CAS 109892-69-5)
Recommended Standards
- 1-(4-bromo-2-methylphenyl)-1H-pyrazole (CAS 1379371-45-5)
- 5-Bromo-1-cyclopropyl-1H-pyrrolo[2,3-b]pyridine (CAS 1415345-41-3)
- (7-Bromoquinolin-6-yl)methanamine (CAS 1379365-17-9)
- 6-Bromo-1-cyclopropyl-1H-benzo[d]imidazole (CAS 1416713-53-5)
- n-(2,3-Difluorobenzyl)-3-methylbutan-2-amine (CAS 1154012-32-4)
- 2-Fluoro-4-nitro-1-(phenoxymethyl)benzene (CAS 1160994-37-5)
- Methyl 2-(4-methoxybenzamido)thiophene-3-carboxylate (CAS 338750-45-1)
- 4-Chloro-2-((2,6-diethylphenyl)amino)thiazole-5-carbaldehyde (CAS 756859-03-7)
- Pibrentasvir (CAS 1353900-92-1)
- Zirconiumnitride,99% metals basis,400 mesh (CAS 25658-42-8)
- 2-(2-Amino-5-bromophenyl)-2-oxoacetic acid (CAS 17617-25-3)
- 3-(3-(1H-Imidazol-4-yl)propoxy)propanenitrile (CAS 698388-27-1)
- 3-(5-Bromo-2-chlorophenoxy)pyrrolidine (CAS 1339344-04-5)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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