4-Ethyl-3-(2-fluorophenyl)-1h-pyrazol-5-amine CAS 1187057-58-4
| CAS No. | 1187057-58-4 |
| Molecular Formula | C11H12FN3 |
| Molecular Weight | 205.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethyl-3-(2-fluorophenyl)-1h-pyrazol-5-amine (C11H12FN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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).
CATO supplies 4-Ethyl-3-(2-fluorophenyl)-1h-pyrazol-5-amine (CAS 1187057-58-4), a certified reference material (molecular formula C11H12FN3, MW 205.23 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.
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 | C11H12FN3 |
| Molecular Weight | 205.23 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- N-[(2-Fluorophenyl)methyl]-1-methyl-1H-pyrazol-4-amine (CAS 1006469-53-9)
- N-[(4-Fluorophenyl)methyl]-1-methyl-1H-pyrazol-4-amine (CAS 1006961-72-3)
- 1-(3-(4-Fluorophenyl)-1H-pyrazol-4-yl)-N-methylmethanamine (CAS 1007521-55-2)
- 2-(3-(4-Fluorophenyl)-1H-pyrazol-1-yl)ethan-1-amine (CAS 1020706-56-2)
- 3-Ethyl-4-(4-fluorophenyl)-1h-pyrazol-5-amine (CAS 1031699-69-0)
- 4-(3-Fluorophenyl)oxane-4-carbonitrile (CAS 1035261-79-0)
- 1-(1-(4-Fluorophenyl)-1H-pyrazol-4-yl)-N-methylmethanamine (CAS 1036711-13-3)
- 1-(1-(2-Fluorophenyl)-1H-pyrazol-4-yl)ethan-1-amine (CAS 1049988-71-7)
Recommended Standards
- 1-(3-Fluorophenyl)-3,5-dimethyl-1h-pyrazol-4-amine (CAS 1176581-36-4)
- 4-Ethyl-5-(4-fluoro-phenyl)-2H-pyrazol-3-ylamine (CAS 1187560-99-1)
- 1-(4-Fluorobenzyl)-4-methyl-1,2-dihydro-3h-pyrazol-3-imine (CAS 1174868-77-9)
- 5-(Pyridin-2-yl)thiophene-2-carboxylic acid (CAS 119082-97-2)
- 6-Chloro-2-(5-nitrofuran-2-yl)imidazo[1,2-a]pyridine (CAS 61982-59-0)
- 4,4'-(2,3-Difluoro-1,4-phenylene)bis(1H-pyrazole) (CAS 2044270-04-2)
- 1-[(2-Chlorophenyl)methyl]-3-{1-[(2,2-difluoro-2H-1,3-benzodioxol-5-yl)methyl]-2-oxo-1,2-dihydropyridin-3-yl}-1-(propan-2-yl)urea (CAS 400084-69-7)
- (5-Methoxy-1H-imidazo[4,5-b]pyridin-2-yl)methanol (CAS 954218-47-4)
- Boc-γ-Abu-OH (CAS 57294-38-9)
- 1,2,2-Trimethylpiperazine (CAS 396133-32-7)
- 3-Methyl-1-phenyl-1H-pyrazole-4-carbaldehyde (CAS 21487-48-9)
- N,N-Diphenylbenzenesulfonamide (CAS 1709-51-9)
- 1-(2-Oxo-2-((thiophen-2-ylmethyl)amino)ethyl)cyclopentane-1-carboxylic acid (CAS 1155131-46-6)
- Tau Peptide (337-368) (Repeat 4 Domain) trifluoroacetate salt (CAS 330456-27-4)
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