4-Fluoro-2-(1H-pyrazol-4-yl)aniline CAS 1820717-55-2
| CAS No. | 1820717-55-2 |
| Molecular Formula | C9H8FN3 |
| Molecular Weight | 177.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Fluoro-2-(1H-pyrazol-4-yl)aniline is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Fluoro-2-(1H-pyrazol-4-yl)aniline (CAS 1820717-55-2) is a high-purity analytical reference standard with the molecular formula C9H8FN3 and a molecular weight of 177.18 g/mol.
4-Fluoro-2-(1H-pyrazol-4-yl)aniline (C9H8FN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution. 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.
As a certified reference material (CRM), 4-Fluoro-2-(1H-pyrazol-4-yl)aniline 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.
Physical & Chemical Properties
| Molecular Formula | C9H8FN3 |
| Molecular Weight | 177.18 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Fluoro Standards
- 5-Fluoro-2-(1h-pyrazol-1-yl)aniline (CAS 1006960-35-5)
- 7-Fluoro-2-methylquinazolin-4-amine (CAS 1009036-30-9)
- 3-(3-Fluoro-4-methylphenyl)-3-oxopropanenitrile (CAS 1016770-89-0)
- 6-FLUORO-7-METHOXY-ISOQUINOLINE (CAS 1036711-00-8)
- 8-Fluoro-4-methylisoquinolin-1(2H)-one (CAS 1050203-45-6)
- 6-Fluoro-8-methylquinolin-4-ol (CAS 1065092-74-1)
- 7-Fluoro-8-methylquinolin-4-ol (CAS 1065092-79-6)
- 6-Fluoro-8-hydroxy-2-methylquinoline (CAS 1070897-08-3)
Recommended Standards
- 2-Fluoro-6-(1H-pyrazol-4-yl)aniline (CAS 1820666-38-3)
- 6-Fluoro-3-methoxyquinoline (CAS 1823930-82-0)
- 5-Fluoro-2-(1H-pyrazol-4-yl)aniline (CAS 1820665-56-2)
- 7-Fluoro-2-methylquinolin-4(1H)-one (CAS 18529-03-8)
- tert-Butyl N-(3-chloro-4-nitrophenyl)-N-propylcarbamate (CAS 1881329-24-3)
- 4-Amino-2-ethoxybenzoic acid (CAS 59-07-4)
- Methyl 2-(3-aminoazetidin-1-yl)acetate (CAS 1468994-99-1)
- Ethyl 4-(quinazolin-4-ylamino)benzoate (CAS 389797-99-3)
- Risedronate EP Impurity B (CAS 105462-23-5)
- (Ra,S)-Ph-Bn-SIPHOX (CAS 2074610-05-0)
- 2-(Difluoromethyl)-6-fluoro-3-methoxypyridine-4-methanol (CAS 1805458-46-1)
- 2-(Diethylamino)butanoic acid (CAS 855152-24-8)
- 1-(Undecyloxy)undecane (CAS 43146-97-0)
- Semaglutide Impurity 115 (CAS CATO-C4X-2226115)
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