2,3-Difluoro-5-(1-methyl-1H-pyrazol-4-yl)pyridine CAS 1151801-90-9
| CAS No. | 1151801-90-9 |
| Molecular Formula | C9H7F2N3 |
| Molecular Weight | 195.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,3-Difluoro-5-(1-methyl-1H-pyrazol-4-yl)pyridine (C9H7F2N3) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2,3-Difluoro-5-(1-methyl-1H-pyrazol-4-yl)pyridine (CAS 1151801-90-9) is a high-purity analytical reference standard with the molecular formula C9H7F2N3 and a molecular weight of 195.17 g/mol.
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), 2,3-Difluoro-5-(1-methyl-1H-pyrazol-4-yl)pyridine 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 | C9H7F2N3 |
| Molecular Weight | 195.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1989 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Difluoro Standards
- 6,7-Difluoro-1-methoxyisoquinoline (CAS 1202006-83-4)
- 6,8-Difluoro-1-methylquinolin-4(1H)-one (CAS 1210257-01-4)
- 7,8-Difluoro-4-methylisoquinolin-1(2H)-one (CAS 1269294-33-8)
- 7,8-Difluoro-2-methylquinolin-3-ol (CAS 1314012-50-4)
- 1,7-Difluoro-5-methoxyisoquinoline (CAS 1409950-64-6)
- 1,5-Difluoro-6-methoxyisoquinoline (CAS 1409950-68-0)
- 1,7-Difluoro-6-methoxyisoquinoline (CAS 1409964-64-2)
- 4,6-Difluoro-1-methyl-1H-indole-5-carbaldehyde (CAS 1823324-74-8)
Recommended Standards
- 2-(2-Aminoacetoxy)benzoic acid (CAS 114426-27-6)
- 5-Acetyl-2-amino-4-hydroxybenzoic acid (CAS 115651-29-1)
- 2-(Methoxycarbonyl)-6-methylisonicotinic acid (CAS 1137881-93-6)
- 2-(2-Nitroethyl)benzoic acid (CAS 115912-92-0)
- (R)-Methyl 2-acetamido-3-hydroxypropanoate (CAS 288402-26-6)
- 1-Chloro-2-(2,2,2-trifluoroethyl)benzene (CAS 145914-05-2)
- 2-Iodothieno[3,2-c]pyridine (CAS 94226-17-2)
- {[3-methoxy-4-(2-methylpropoxy)phenyl]methyl}(propyl)amine hydrochloride (CAS 1049781-64-7)
- 2-{[(1-methoxypropan-2-yl)oxy]methyl}oxirane (CAS 132230-40-1)
- Isoindolo[2,1-b]isoquinoline-5,7-dione (CAS 65320-68-5)
- 1-(2-(2-Aminoethyl)-6-hydroxypyridin-4-yl)ethan-1-one (CAS 1393553-15-5)
- 4-([1,4'-Bipiperidin]-4-ylethynyl)-N-((1r,3r)-3-(3-chloro-4-cyanophenoxy)-2,2,4,4-tetramethylcyclobutyl)benzamide (CAS 2316837-23-5)
- 1,4-Bis(3-bromopropoxy)benzene (CAS 69982-57-6)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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