5-Amino-4-fluoro-1,3-dimethyl-1H-pyrazole CAS 96886-29-2
| CAS No. | 96886-29-2 |
| Molecular Formula | C5H8FN3 |
| Molecular Weight | 129.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Amino-4-fluoro-1,3-dimethyl-1H-pyrazole is closely related to a nitrile group, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Amino-4-fluoro-1,3-dimethyl-1H-pyrazole (CAS 96886-29-2), molecular formula C5H8FN3 and molecular weight 129.14 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Amino-4-fluoro-1,3-dimethyl-1H-pyrazole (C5H8FN3) is characterized by a nitrile group, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | C5H8FN3 |
| Molecular Weight | 129.14 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Amino Standards
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- 2-Amino-2-(1H-tetrazol-5-yl)ethanol (CAS 1403765-05-8)
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Recommended Standards
- Isothiazole-3-carboxylic acid (CAS 4576-90-3)
- 4H-1,3-Thiazine-4,6(5H)-dione (CAS 63549-80-4)
- Isothiazole-4-carboxylic acid (CAS 822-82-2)
- 3-Thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one (CAS 626-08-4)
- N-(4-Bromo-2-chlorophenyl)-2-methoxybenzamide (CAS 842117-64-0)
- 2-Propoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazine (CAS 1260152-44-0)
- 4-(3-(Trifluoromethyl)phenyl)-3H-1,2,4-triazole-3,5(4H)-dione (CAS 89676-71-1)
- (4-(Methylthio)phenyl)(thiophen-2-yl)methanol (CAS 356552-80-2)
- 1-((3-Chloro-4-fluorophenyl)sulfonyl)-4-methylpiperazine (CAS 613657-40-2)
- 5-Amino-1-methyl-[3,4'-bipyridin]-6(1H)-one (CAS 62749-44-4)
- Leuprorelin Impurity 19 (CAS 38482-70-1)
- 2-Methyl-N-((3S,4S)-3-methyl-2-oxa-8-azaspiro[4.5]Decan-4-yl)propane-2-sulfinamide (CAS 2240984-69-2)
- 5-chloro-1-ethyl-2-methyl-4-nitro-1H-imidazole (CAS 2302-28-5)
- Tetrapeptide-3 (CAS 827306-97-8)
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