4-(2-Bromoethyl)-1H-pyrazole CAS 1142953-56-7
| CAS No. | 1142953-56-7 |
| Molecular Formula | C5H7BrN2 |
| Molecular Weight | 175.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(2-Bromoethyl)-1H-pyrazole (CAS 1142953-56-7), molecular formula C5H7BrN2 and molecular weight 175.03 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, bromine substitution, 4-(2-Bromoethyl)-1H-pyrazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO manufactures 4-(2-Bromoethyl)-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 | 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.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromoethyl Standards
- 1-(2-Bromoethyl)pyrazole (CAS 119291-22-4)
- 1-(2-Bromoethyl)-1H-imidazole (CAS 94614-83-2)
- 2-(2-Bromoethyl)-1h-imidazole (CAS 51036-76-1)
- 2-(2-Bromoethyl)furan (CAS 123217-93-6)
- 3-(2-Bromoethyl)furan (CAS 98126-46-6)
- 1-(2-Bromoethyl)-1,2,3-triazole (CAS 1083172-01-3)
- 2-(2-Bromoethyl)-2H-1,2,3-triazole (CAS 1260901-96-9)
- 4-(2-bromoethyl)-1,2-oxazole (CAS 1314398-14-5)
Recommended Standards
- 5-Bromo-2,4-dimethyl-1H-imidazole (CAS 1049118-07-1)
- 3-(Bromomethyl)-1-methyl-1H-pyrazole (CAS 102846-13-9)
- 3-Bromo-1-ethyl-1H-pyrazole (CAS 1216504-91-4)
- 3-Bromo-5-ethyl-1H-pyrazole (CAS 1015779-23-3)
- (E)-4-hydroxy-6-methyl-3-(1-(2-(4-phenylthiazol-2-yl)hydrazono)ethyl)-2H-pyran-2-one (CAS 151504-48-2)
- 2-Methoxy-N-(pyridin-4-yl)acetamide (CAS 499975-08-5)
- 5-Chloro-3-methyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazolo[3,4-b]pyridine (CAS 2102326-08-7)
- (Methylsulfanyl)ethyne (CAS 10152-75-7)
- tert-butyl ((S)-5-amino-6-oxo-6-(((S)-1-phenylpropan-2-yl)amino)hexyl)carbamate (CAS 27266572-58-1)
- Methyl 2-(1-((pyrrolidine-1-carboxamido)methyl)cyclohexyl)acetate (CAS 1573548-19-2)
- Rosuvastatin Impurity 60 (CAS 2162136-65-2)
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- N-(6-Fluorobenzo[d]thiazol-2-yl)-4-(methylthio)benzamide (CAS 896349-18-1)
- Peptide 437 (CAS CATO-CPTD788437)
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