5-fluoro-2-(4-nitro-1H-pyrazol-3-yl)pyridine CAS 1551297-76-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1551297-76-7
Molecular FormulaC8H5FN4O2
Molecular Weight208.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-fluoro-2-(4-nitro-1H-pyrazol-3-yl)pyridine CAS 1551297-76-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 208.15 g/mol gives 5-fluoro-2-(4-nitro-1H-pyrazol-3-yl)pyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-fluoro-2-(4-nitro-1H-pyrazol-3-yl)pyridine (CAS 1551297-76-7) is a high-purity analytical reference standard with the molecular formula C8H5FN4O2 and a molecular weight of 208.15 g/mol.

Structurally, 5-fluoro-2-(4-nitro-1H-pyrazol-3-yl)pyridine (C8H5FN4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 208.15 g/mol, it falls into the medium-molecular-weight range. 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 FormulaC8H5FN4O2
Molecular Weight208.15 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1992
Halogen ContentF-containing
Nitrogen Atoms4

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