5-Fluoro-2-(3-methyl-1H-pyrazol-1-yl)aniline CAS 923945-91-9
| CAS No. | 923945-91-9 |
| Molecular Formula | C10H10FN3 |
| Molecular Weight | 191.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Fluoro-2-(3-methyl-1H-pyrazol-1-yl)aniline (CAS 923945-91-9), molecular formula C10H10FN3 and molecular weight 191.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H10FN3, 5-Fluoro-2-(3-methyl-1H-pyrazol-1-yl)aniline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 5-Fluoro-2-(3-methyl-1H-pyrazol-1-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 | C10H10FN3 |
| Molecular Weight | 191.20 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.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Fluoro Standards
- 5-Fluoro-2-(4-methyl-1h-pyrazol-1-yl)aniline (CAS 1006468-17-2)
- 3-Fluoro-4-(4-methyl-1h-pyrazol-1-yl)aniline (CAS 1006960-79-7)
- 1-(4-Fluoro-1h-indol-3-yl)propan-2-one (CAS 1018637-40-5)
- 3-Fluoro-N-(1h-imidazol-2-ylmethyl)aniline (CAS 1020670-43-2)
- 3-(4-Fluoro-2-methylphenyl)-1H-pyrazol-5-amine (CAS 1040724-40-0)
- 4-(3-Fluoro-5-methylphenyl)-1H-pyrazol-5-amine (CAS 1048971-90-9)
- 6-Fluoro-2-hydrazinyl-4-methylquinoline (CAS 108099-80-5)
- 8-Fluoro-2-methylquinoline-5,6-diamine (CAS 1092285-88-5)
Recommended Standards
- 5-Fluoro-2-(2-methyl-1h-imidazol-1-yl)aniline (CAS 869942-48-3)
- 6-Fluoro-1,7-dimethyl-1h-indole-2-carbaldehyde (CAS 883531-02-0)
- 5-(Difluoromethyl)-2-(methylthio)pyrimidin-4-amine (CAS 2090187-83-8)
- 6-Fluoro-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-7-amine (CAS 2248-44-4)
- 5-(4-Chlorophenyl)-2-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 862588-62-3)
- 551924-38-0 N-(6-tert-Butyl-3-cyano-4,5,6,7-tetrahydro-1-benzothien-2-yl)-3-chloropropanamide MFCD01357700 (CAS 551924-38-0)
- 5-Bromo-4-isopropyl-1H-imidazole-2-carboxylic acid (CAS 1369147-68-1)
- 4-(Chloroacetoxy)butyl acrylate (CAS 157525-13-8)
- Calcitonin Impurity 13 (CAS CATO-C4X-221813)
- 2-(Bromomethyl)-1-methoxynaphthalene (CAS 138779-64-3)
- tert-Butyl (4-acetyl-3-hydroxyphenyl)carbamate (CAS 1258868-22-2)
- 2-(4-(2-Amino-3-cyano-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromen-4-yl)-2-methoxyphenoxy)-N-(3,4-dimethylphenyl)acetamide (CAS 352435-34-8)
- 4-Iodo-N,N-dimethylbutanamide (CAS 669720-74-5)
- Semaglutide impurity 202 (CAS CATO-C4X-2226202)
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