4-Bromo-1-(difluoromethyl)-5-methyl-1H-pyrazole CAS 1243250-04-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1243250-04-5 |
| Molecular Formula | C5H5BrF2N2 |
| Molecular Weight | 211.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-1-(difluoromethyl)-5-methyl-1H-pyrazole (CAS 1243250-04-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H5BrF2N2. Molecular weight: 211.01 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H5BrF2N2 |
| Molecular Weight | 211.01 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-(2,2-difluoroethyl)-1H-pyrazole (CAS 1049730-36-0)
- 4-Bromo-5-(difluoromethyl)-1-methylpyrazole (CAS 1089212-57-6)
- 4-Bromo-1-(difluoromethyl)-3-methyl-1H-pyrazole (CAS 1215295-92-3)
- 3-Bromo-1-(2,2-difluoroethyl)-1H-pyrazole (CAS 1849251-81-5)
- 5-Bromo-1-(2,2-difluoroethyl)-1H-pyrazole (CAS 1946823-81-9)
- 2-Bromo-3-methylsuccinic acid (CAS 7405-17-6)
- 5-Bromo-3-(difluoromethyl)-1-methyl-1H-pyrazole (CAS 2248389-97-9)
- 2-Bromo-1-methyl-1H-imidazole-4,5-dicarbonitrile (CAS 115905-43-6)
Recommended Standards
- (S)-2-Bromopentanedioic acid (CAS 1233873-77-2)
- 3-(Bromodifluoromethyl)-5-methyl-1H-pyrazole (CAS 1884457-49-1)
- (3R,4R,5S)-5-(Bromomethyl)-3,4-dihydroxydihydrofuran-2(3H)-one (CAS 191348-58-0)
- 5'-((3,5-Dicarboxyphenyl)ethynyl)-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1542480-30-7)
- UNC569 (CAS 1350547-65-7)
- 6,7-Difluoroquinazoline-2,4(1H,3H)-dione (CAS 769158-54-5)
- N4-(2-Bromophenyl)-N2-propyl-L-asparagine (CAS 1048001-58-6)
- 1-(Bromomethyl)-1-(2-methylbutyl)cyclopentane (CAS 1483205-72-6)
- (3S,4R)-1-(4-aminopyrimidin-2-yl)-3-fluoro-4-methylpiperidin-4-ol (CAS 1643500-08-6)
- Semaglutide (CAS 910463-68-2（free base）)
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 13829788188 / jacky.chen@cato-chem.com