[4-(Ethenyloxy)phenyl]boronic acid CAS 2244288-53-5

Purity 97%+In StockPharmaceutical Standards
CAS No.2244288-53-5
Molecular FormulaC8H9BO3
Molecular Weight163.97 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

[4-(Ethenyloxy)phenyl]boronic acid CAS 2244288-53-5 chemical structure

Description

[4-(Ethenyloxy)phenyl]boronic acid (CAS 2244288-53-5) is a high-purity analytical reference standard with the molecular formula C8H9BO3 and a molecular weight of 163.97 g/mol.

Structurally, [4-(Ethenyloxy)phenyl]boronic acid (C8H9BO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 163.97 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC8H9BO3
Molecular Weight163.97 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1998

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