4-Bromo-1-(but-3-en-1-yl)-1H-pyrazole CAS 1343985-69-2
| CAS No. | 1343985-69-2 |
| Molecular Formula | C7H9BrN2 |
| Molecular Weight | 201.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-1-(but-3-en-1-yl)-1H-pyrazole (C7H9BrN2) contains a nitrile group, 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).
4-Bromo-1-(but-3-en-1-yl)-1H-pyrazole (CAS 1343985-69-2) is a high-purity analytical reference standard with the molecular formula C7H9BrN2 and a molecular weight of 201.06 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Bromo-1-(but-3-en-1-yl)-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 | C7H9BrN2 |
| Molecular Weight | 201.06 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.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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- 4-Bromo-5-methylbenzene-1,2-diamine (CAS 102169-44-8)
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Recommended Standards
- 2-(2-Bromopropyl)pyrimidine (CAS 1342623-23-7)
- (S)-1-(3-Bromophenyl)ethanol (CAS 134615-22-8)
- 5-(3-Bromopropyl)pyrimidine (CAS 1340130-42-8)
- (R)-3-Bromo-alpha-methylbenzyl Alcohol (CAS 134615-24-0)
- (Z)-(1-(3,3-Dimethyl-1-phenylbut-1-en-1-yl)naphthalen-2-yl)diphenylphosphine (CAS 2862827-57-2)
- (3-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)-4-chlorophenyl)boronic acid (CAS 1704074-39-4)
- 1,5-Dimethyl-1H-tetrazole (CAS 5144-11-6)
- 6-methyl-decahydroquinoline (CAS 52601-68-0)
- N-(2-(ethylamino)ethyl)-2,4-dihydroxyquinoline-3-carboxamide (CAS 378199-95-2)
- 1-(1-Benzothiophen-3-yl)ethan-1-amine (CAS 158868-44-1)
- 4-(3-Oxo-1,3,4,5,6,7-hexahydro-2H-indazol-2-yl)benzoic acid (CAS 866018-45-3)
- Ethyl 7-nitro-9-oxo-9H-fluorene-2-carboxylate (CAS 92858-67-8)
- Ethyl 2-amino-1,3-thiazole-4-carboxylate hydrochloride (CAS 435342-17-9)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
Why CATO?
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