rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid CAS 2920195-65-7

Purity 97%+In StockPharmaceutical Standards
CAS No.2920195-65-7
Molecular FormulaC11H9FO3
Molecular Weight208.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid CAS 2920195-65-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 208.19 g/mol gives rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid (CAS 2920195-65-7) is a high-purity analytical reference standard with the molecular formula C11H9FO3 and a molecular weight of 208.19 g/mol.

Based on its molecular formula C11H9FO3, rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 208.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

As a certified reference material (CRM), rel-(1′R,2′S)-5-Fluoro-2H-spiro[benzofuran-3,1'-cyclopropane]-2'-carboxylic acid 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 FormulaC11H9FO3
Molecular Weight208.19 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-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
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.)2004
Halogen ContentF-containing

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