(exo,exo)-7-Oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid CAS 28871-62-7

Purity 97%+In StockPharmaceutical Standards
CAS No.28871-62-7
Molecular FormulaC8H8O5
Molecular Weight184.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(exo,exo)-7-Oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid CAS 28871-62-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 184.15 g/mol gives (exo,exo)-7-Oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(exo,exo)-7-Oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid (CAS 28871-62-7) is a high-purity analytical reference standard with the molecular formula C8H8O5 and a molecular weight of 184.15 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (exo,exo)-7-Oxabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC8H8O5
Molecular Weight184.15 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)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965

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