5-Fluoro-1-(pyridin-2-yl)-1H-pyrazole-4-carbonitrile CAS 1269293-12-0
| CAS No. | 1269293-12-0 |
| Molecular Formula | C9H5FN4 |
| Molecular Weight | 188.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Fluoro-1-(pyridin-2-yl)-1H-pyrazole-4-carbonitrile (CAS 1269293-12-0), molecular formula C9H5FN4 and molecular weight 188.16 g/mol, is a CATO reference standard with documented purity and traceability.
5-Fluoro-1-(pyridin-2-yl)-1H-pyrazole-4-carbonitrile (C9H5FN4) 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 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.
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 | C9H5FN4 |
| Molecular Weight | 188.16 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Fluoro Standards
- 7-Fluoro-4-oxo-1,4-dihydroquinoline-3-carbonitrile (CAS 1008780-80-0)
- 6-Fluoro-4-hydroxyquinoline-7-carbonitrile (CAS 1260761-66-7)
- 5-Fluoro-1-(propan-2-yl)-1,3-diazinane-2,4,6-trione (CAS 1564748-31-7)
- Ethyl 4-fluoro-5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate (CAS 1707364-85-9)
- 3-(1-fluoro-2-methylpropan-2-yl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 2925379-34-4)
- 3-Fluoro-2-(1h-1,2,4-triazol-1-yl)benzonitrile (CAS 870562-65-5)
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- 5-(1-Fluoro-2-methylpropan-2-yl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 2388488-78-4)
Recommended Standards
- 2-Oxo-2-((5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)amino)acetic acid (CAS 130992-22-2)
- 5-(4-Fluorophenyl)isoxazole-3-carbonitrile (CAS 1170986-40-9)
- 5-(2-Fluorophenyl)-2H-1,2,3-triazole-4-carbonitrile (CAS 1352658-68-4)
- 2-acetamido-4-methoxy-4-oxobutanoic acid (CAS 111691-92-0)
- Octyl α-D-Glucopyranoside (CAS 29781-80-4)
- (S)-4-methyl-2-(pyrrolidin-2-yl)benzonitrile (CAS 1213136-12-9)
- 1-(3,4-Dichlorobenzyl)-1,2-dihydro-3h-1,2,4-triazol-3-imine (CAS 832741-07-8)
- (4-Hydroxyphenyl)(pyrrolidin-1-yl)methanone (CAS 478929-28-1)
- tert-Butyl ((2,6-dibromopyridin-4-yl)methyl)carbamate (CAS 1822856-45-0)
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- 3-Amino-1,2-benzoxazole-5-sulfonyl chloride (CAS 627869-92-5)
- Semaglutide238 (CAS CATO-C4X-2226238)
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