4-Bromo-3-ethyl-1H-pyrazole CAS 15802-79-6
| CAS No. | 15802-79-6 |
| Molecular Formula | C5H7BrN2 |
| Molecular Weight | 175.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-3-ethyl-1H-pyrazole (C5H7BrN2) contains a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 4-Bromo-3-ethyl-1H-pyrazole (CAS 15802-79-6), a certified reference material (molecular formula C5H7BrN2, MW 175.03 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromo-3-ethyl-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.
Physical & Chemical Properties
| Molecular Formula | C5H7BrN2 |
| Molecular Weight | 175.03 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-5-ethyl-1H-pyrazole (CAS 1015779-23-3)
- 5-Bromo-2,4-dimethyl-1H-imidazole (CAS 1049118-07-1)
- 3-Bromo-1-ethyl-1H-pyrazole (CAS 1216504-91-4)
- 4-bromo-1H-pyrrole-2-carbonitrile (CAS 1221435-18-2)
- 5-Bromo-1-ethyl-1h-pyrazole (CAS 1268334-99-1)
- (4-Bromo-1h-pyrrol-2-yl)methanamine (CAS 1354952-66-1)
- 5-Bromo-1-ethyl-1H-imidazole (CAS 1429028-32-9)
- 4-Bromo-2-ethyl-1H-imidazole (CAS 145575-91-3)
Recommended Standards
- 4-Bromo-1,5-dimethylimidazole (CAS 158585-81-0)
- 1-(2-Bromoethyl)-1H-imidazole (CAS 94614-83-2)
- 1,1-Dichloro-1-Fluoro-Pentan-2-Ol (CAS 6301-97-9)
- 4-(Bromomethyl)-1-methyl-1H-imidazole (CAS 1338932-45-8)
- 1-Chloro-9H-thioxanthen-9-one (CAS 38605-72-0)
- (R)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-3-carboxylic acid (CAS 193693-67-3)
- 4-(Perfluoroethyl)aniline (CAS 60979-04-6)
- Trifluoro(methylsulfonyl)methane (CAS 421-82-9)
- Didesmethyl Sibutramine-d6 (CAS 1189727-93-2)
- SDZ 220-581 hydrochloride (CAS 179411-93-9)
- 2-(6-Fluoro-4-methylquinolin-2-yl)acetonitrile (CAS 1437385-57-3)
- 4-(2-(2-(4-Fluorophenoxy)ethoxy)ethoxy)-1H-indole (CAS 477856-76-1)
- (4-Butyl-5-methylfuran-2-yl)(phenyl)methanol (CAS 944670-65-9)
- Peptide 436 (CAS CATO-CPTD788436)
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