1-(4-Bromo-1-ethyl-1h-pyrazol-5-yl)ethan-1-one CAS 925146-41-4
| CAS No. | 925146-41-4 |
| Molecular Formula | C7H9BrN2O |
| Molecular Weight | 217.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-(4-Bromo-1-ethyl-1h-pyrazol-5-yl)ethan-1-one 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.
1-(4-Bromo-1-ethyl-1h-pyrazol-5-yl)ethan-1-one (CAS 925146-41-4), molecular formula C7H9BrN2O and molecular weight 217.06 g/mol, is a CATO reference standard with documented purity and traceability.
1-(4-Bromo-1-ethyl-1h-pyrazol-5-yl)ethan-1-one (C7H9BrN2O) contains an amide group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H9BrN2O |
| Molecular Weight | 217.06 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-Bromo-1-(1,3-dimethyl-1H-pyrazol-5-yl)ethan-1-one (CAS 1015936-63-6)
- 6-Bromo-5-ethoxypyridin-3-amine (CAS 1020253-84-2)
- 3-Bromo-5-ethoxyphenol (CAS 1026796-70-2)
- 2-Bromo-6-isopropoxypyrazine (CAS 1027512-85-1)
- 4-Bromo-1-(tetrahydrofuran-3-yl)-1H-pyrazole (CAS 1040377-07-8)
- 4-Bromo-5-methoxy-1,2-benzenediamine (CAS 108447-01-4)
- 4-Bromo-N-ethyl-1h-pyrrole-2-carboxamide (CAS 1153795-60-8)
- 4-Bromo-3-methoxybenzene-1,2-diamine (CAS 1162696-92-5)
Recommended Standards
- 1-(4-Bromo-1-ethyl-1H-pyrazol-3-yl)ethanone (CAS 925180-03-6)
- 1-(4-Bromo-1H-pyrazol-1-yl)cyclopropanemethanol (CAS 2241142-25-4)
- 1-(3-Bromophenyl)-1,2-ethanediol (CAS 402937-72-8)
- 1-(4-Bromophenyl)ethane-1,2-diol (CAS 92093-23-7)
- Posaconazole (CAS 171228-49-2)
- 6263-83-8 EO7HSL24EN 1,3-Dibenzoylpropane 1,5-Pentanedione, 1,5-diphenyl- 1,5-Diphenyl-1,5-pentadione 1,5-Diphenyl-1,5-pentanedione NSC 46678 UNII-EO7HSL24EN (CAS 6263-83-8)
- (S)-4-(1-Aminoethyl)phenol (CAS 221670-72-0)
- 3-Methoxypicolinic acid hydrochloride (CAS 170622-23-8)
- 2-(5-Formyl-2-methoxyphenyl)acetic acid (CAS 893733-62-5)
- Methyl 5-methyl-6-(phenylthio)nicotinate (CAS 1355222-98-8)
- 4-(3-Bromobut-3-en-1-yl)-1,2-dichlorobenzene (CAS 951893-03-1)
- [1,3]Dithiolo[4,5-b]pyrazin-2-one (CAS 4428-04-0)
- 2-((6-(Pyridin-4-yl)pyridazin-3-yl)oxy)ethan-1-amine (CAS 1283108-07-5)
- Semaglutide impurity 198 (CAS CATO-C4X-2226198)
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