1-(4-Bromophenyl)-3-ethyl-1H-pyrazol-5-amine CAS 1225794-45-5
| CAS No. | 1225794-45-5 |
| Molecular Formula | C11H12BrN3 |
| Molecular Weight | 266.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(4-Bromophenyl)-3-ethyl-1H-pyrazol-5-amine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
1-(4-Bromophenyl)-3-ethyl-1H-pyrazol-5-amine (CAS 1225794-45-5), molecular formula C11H12BrN3 and molecular weight 266.14 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 1-(4-Bromophenyl)-3-ethyl-1H-pyrazol-5-amine is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 266.14 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).
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 | C11H12BrN3 |
| Molecular Weight | 266.14 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.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromophenyl Standards
- 3-(4-Bromophenyl)-1,4-dimethyl-1h-pyrazol-5-amine (CAS 1152653-72-9)
- 3-(3-Bromophenyl)-1,4-dimethyl-1h-pyrazol-5-amine (CAS 1152655-64-5)
- 3-(2-Bromophenyl)-1,4-dimethyl-1h-pyrazol-5-amine (CAS 1152663-97-2)
- 4-(4-Bromophenyl)-2,5-dimethylpyrazol-3-amine (CAS 1152678-01-7)
- 4-(3-Bromophenyl)-2,5-dimethylpyrazol-3-amine (CAS 1156165-95-5)
- 3-(4-Bromophenyl)-4-ethyl-1h-pyrazol-5-amine (CAS 1187057-46-0)
- 3-(3-Bromophenyl)-4-ethyl-1h-pyrazol-5-amine (CAS 1187561-37-0)
- 4-(4-Bromophenyl)-1,2-dimethyl-1h-imidazol-5-amine (CAS 1247523-79-0)
Recommended Standards
- 5-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H,2H,3H-pyrrolo[2,3-b]pyridin-2-one (CAS 1207623-97-9)
- 3-(4-Bromo-2-methylphenyl)-4-methyl-1h-pyrazol-5-amine (CAS 1228933-73-0)
- 4-Bromo-2-(4,5-dihydro-1H-imidazol-2-yl)isoindoline (CAS 1194374-42-9)
- 8-Bromo-2,3,4,5-tetrahydro-1H-benzo[4,5]imidazo[1,2-d][1,4]diazepine (CAS 1239879-65-2)
- (R)-2-(4-fluoro-2-(trifluoromethyl)phenyl)pyrrolidine (CAS 1213099-68-3)
- 5-Phenoxypentyl bromide (CAS 22921-72-8)
- Methanesulfonic acid 2,2-dimethyl-3-oxo-butyl ester (CAS 4301-02-4)
- 6-(3,4-Dichlorophenyl)imidazo[2,1-b]thiazole-5-carbaldehyde (CAS 562792-65-8)
- 1-(Thiophen-2-ylmethyl)piperidine-4-carbaldehyde (CAS 926921-80-4)
- Undecyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-b-D-glucopyranose (CAS 173725-24-1)
- 4-(2-Amino-ethyl)-piperidine-1-sulfonic acid dimethylamide hydrochloride (CAS 1361111-23-0)
- 6-N-Ethylquinoline-5,6-diamine (CAS 1157504-04-5)
- 3-Fluoro-4-iodo-5-nitropyridine (CAS 1804383-51-4)
- Semaglutide impurity 108 (CAS CATO-C4X-2226108)
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