3-(4-Fluorophenyl)-1H-pyrazol-4-amine CAS 91857-94-2
| CAS No. | 91857-94-2 |
| Molecular Formula | C9H8FN3 |
| Molecular Weight | 177.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-(4-Fluorophenyl)-1H-pyrazol-4-amine 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.
3-(4-Fluorophenyl)-1H-pyrazol-4-amine (CAS 91857-94-2), molecular formula C9H8FN3 and molecular weight 177.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution, 3-(4-Fluorophenyl)-1H-pyrazol-4-amine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 177.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-(4-Fluorophenyl)-1H-pyrazol-4-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.
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.) | 1983 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Fluorophenyl Standards
- 3-(3-Fluorophenyl)-1H-pyrazol-5-amine (CAS 1028842-99-0)
- 1-(2-Fluorophenyl)-1H-pyrazol-5-amine (CAS 1056999-19-9)
- 1-(3-Fluorophenyl)-1h-pyrazol-5-amine (CAS 1056999-20-2)
- 3-(4-Fluorophenyl)-2-methyl-3-oxopropanenitrile (CAS 1094267-29-4)
- 5-(2-Fluorophenyl)-3-methyl-1h-1,2,4-triazole (CAS 1094563-94-6)
- 5-(3-Fluorophenyl)-3-methyl-1H-1,2,4-triazole (CAS 1094688-07-9)
- 1-(2-Fluorophenyl)-1H-pyrazol-4-amine (CAS 1153040-48-2)
- 1-(4-Fluorophenyl)-1h-pyrazol-4-amine (CAS 1156602-69-5)
Recommended Standards
- 3-(4-Fluoro-2-methylphenyl)-3-oxopropanenitrile (CAS 705278-81-5)
- 3-(4-Fluorophenyl)-5-methylisoxazole (CAS 491875-99-1)
- 2-Fluoro-4-(furan-2-yl)aniline (CAS 893736-98-6)
- 3-(5-Fluoro-2-methylphenyl)-3-oxopropanenitrile (CAS 884504-23-8)
- (S)-2-((1-Acetylpyrrolidin-2-yl)methoxy)acetic acid (CAS 1354010-34-6)
- 5-(Methylsulfonyl)-4-(m-tolyl)-1H-thieno[2,3-c]pyrazol-3-amine (CAS 1707393-91-6)
- 2-Fluoro-N,5-dimethylnicotinamide (CAS 2167518-30-9)
- 8,8-Difluoro-1-oxa-2-azaspiro[4.5]Dec-2-ene-3-carboxylic acid (CAS 1259026-30-6)
- Ethyl 4-(4-methylphenyl)-2,4-dioxobutanoate (CAS 5814-37-9)
- Methyl 4-(Benzyloxy)-3-nitrobenzoate (CAS 135328-57-3)
- Ethyl 4-methylpentanimidate (CAS 999-11-1)
- (1α,5α,6β)-3-Azabicyclo[3.1.0]hexane-6-carboxylic acid (CAS 1251744-13-4)
- Ethyl 4-(1H-purin-6-yl)piperazine-1-carboxylate (CAS 84806-94-0)
- Immunstimulating Peptide, human (CAS 94773-24-7)
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