4-Bromo-1-(butan-2-yl)-1h-pyrazole CAS 1179304-86-9
| CAS No. | 1179304-86-9 |
| Molecular Formula | C7H11BrN2 |
| Molecular Weight | 203.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Bromo-1-(butan-2-yl)-1h-pyrazole (CAS 1179304-86-9), a certified reference material (molecular formula C7H11BrN2, MW 203.08 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H11BrN2, 4-Bromo-1-(butan-2-yl)-1h-pyrazole contains a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.08 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H11BrN2 |
| Molecular Weight | 203.08 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.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 6-bromo-4-methyl-pyridine-3-carbonitrile (CAS 1003711-35-0)
- 6-Bromo-2-methylhept-6-en-3-yn-2-ol (CAS 100379-06-4)
- 4-Bromo-1-isobutyl-1H-pyrazole (CAS 1184394-32-8)
- 2-Bromo-1,2-dicyclopropylethan-1-one (CAS 1187384-08-2)
- 5-Bromo-1-isopropyl-2-methyl-1H-imidazole (CAS 1204228-25-0)
- 2-(2-bromo-3-pyridyl)acetonitrile (CAS 1211523-71-5)
- 3-Bromo-5,5-dimethylcyclohex-2-en-1-one (CAS 13271-49-3)
- 2-(3-Bromo-2-methylpropyl)furan (CAS 1343100-24-2)
Recommended Standards
- 1-(4-Bromobutyl)-1h-pyrazole (CAS 1152875-99-4)
- 4-(3-bromopropyl)-1-methyl-1H-pyrazole (CAS 1082065-79-9)
- Bupropion Impurity 32 (CAS CATO-C4X-120332)
- 1-(2-Bromocyclohex-1-en-1-yl)ethan-1-one (CAS 122439-38-7)
- 5-Fluoro-2-(trifluoromethyl)nicotinic acid (CAS 1804046-57-8)
- Helium-<SUP>3</SUP>He (CAS 14762-55-1)
- 3-Chloro-2-methyl-N-(4-(2-(4-methylpiperazin-1-yl)-2-oxoethyl)thiazol-2-yl)benzenesulfonamide (CAS 376640-41-4)
- 5-(4-Chlorophenyl)-4-(4-ethoxybenzoyl)-3-hydroxy-1-(thiazol-2-yl)-1,5-dihydro-2h-pyrrol-2-one (CAS 380584-15-6)
- N-(2-Acetylbenzofuran-3-yl)-4-methylbenzenesulfonamide (CAS 94511-08-7)
- 2-Ethoxy-2,2-difluoroethan-1-amine hydrochloride (CAS 2194846-13-2)
- ((1S,9AS)-octahydro-2H-quinolizin-1-yl)methanol (CAS 7635-60-1)
- Maltononaose (CAS 6471-60-9)
- (2Z)-3-[2-(Difluoromethoxy)phenyl]-2-phenylprop-2-enoic acid (CAS 380344-74-1)
- Insulin Degludec Impurity 27 (CAS CATO-C4X-215727)
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