3-bromo-4-fluoro-1-methyl-1H-pyrazole CAS 2090743-53-4
| CAS No. | 2090743-53-4 |
| Molecular Formula | C4H8BrFN2 |
| Molecular Weight | 183.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-bromo-4-fluoro-1-methyl-1H-pyrazole is closely related to fluorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-bromo-4-fluoro-1-methyl-1H-pyrazole (CAS 2090743-53-4), a certified reference material (molecular formula C4H8BrFN2, MW 183.02 g/mol) for analytical method development and quality control.
3-bromo-4-fluoro-1-methyl-1H-pyrazole (C4H8BrFN2) contains fluorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 3-bromo-4-fluoro-1-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 | C4H8BrFN2 |
| Molecular Weight | 183.02 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 3-bromo-6-fluoro-pyridazine (CAS 1353854-35-9)
- 4-bromo-3-fluoro-1-methyl-1H-pyrazole (CAS 1785074-93-2)
- 2-Bromo-4-cyanopyridine (CAS 10386-27-3)
- 2-Bromo-5-ethynylpyrazine (CAS 1092352-04-9)
- 5-Bromo-2-ethynylpyrimidine (CAS 1135283-08-7)
- 3-Bromo-4-cyanopyridine (CAS 13958-98-0)
- 4-Bromo-3-cyanopyridine (CAS 154237-70-4)
- 3-Bromo-6-ethynylpyridazine (CAS 1797130-79-0)
Recommended Standards
- 3-(bromomethyl)-3-(fluoromethyl)oxetane (CAS 2169345-99-5)
- Adipoyl chloride (CAS 111-50-2)
- Methyl 2,2-dichloro-1-methylcyclopropane-1-carboxylate (CAS 1447-13-8)
- 2-(2,2-dichloro-1-methylcyclopropyl)acetic acid (CAS 5508-89-4)
- N-(4-Bromobenzyl)-2-chlorobenzamide (CAS 1283105-08-7)
- 2-(3-Methoxyphenyl)-2,3,5,6,7,8-hexahydroquinazolin-4(1H)-one (CAS 62582-91-6)
- 1,8-Dichloroanthracene (CAS 14381-66-9)
- 4-chloro-5-methylpyrrolo[2,1-f][1,2,4]triazin-6-yl 2,2-dimethylpropanoate (CAS 872206-49-0)
- 5-((3-Fluoropropyl)thio)-1,3,4-thiadiazole-2(3H)-thione (CAS 866144-12-9)
- 1-(5-Chloro-2-hydroxyphenyl)butan-1-one (CAS 51978-33-7)
- 5-Fluoroimidazo[1,2-a]pyridine hydrochloride (CAS 198896-14-9)
- Tetrabutylammonium (dichlorobromide) (CAS 13053-75-3)
- 2-{[(4-methylphenyl)methyl]sulfanyl}-4,5-dihydro-1h-imidazole hydrochloride (CAS 673434-77-0)
- Peptide Impurity 11 X TFA Salt (CAS CATO-CPTD788811)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com