4-Fluoro-3-hydroxy-7-nitro 1H-indazole CAS 501650-69-7

Purity 97%+In StockPharmaceutical Standards
CAS No.501650-69-7
Molecular FormulaC7H4FN3O3
Molecular Weight197.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Fluoro-3-hydroxy-7-nitro 1H-indazole CAS 501650-69-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 197.12 g/mol gives 4-Fluoro-3-hydroxy-7-nitro 1H-indazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Fluoro-3-hydroxy-7-nitro 1H-indazole (CAS 501650-69-7), molecular formula C7H4FN3O3 and molecular weight 197.12 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 4-Fluoro-3-hydroxy-7-nitro 1H-indazole (C7H4FN3O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 197.12 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC7H4FN3O3
Molecular Weight197.12 g/mol
AppearanceOff-white to pale 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 methanol, ethanol, DMSO, water
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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1984
Halogen ContentF-containing
Nitrogen Atoms3

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