5-Methoxyisobenzofuran-1,3-dione CAS 28281-76-7

Purity 97%+In StockPharmaceutical Standards
CAS No.28281-76-7
Molecular FormulaC9H6O4
Molecular Weight178.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methoxyisobenzofuran-1,3-dione CAS 28281-76-7 chemical structure

Description

5-Methoxyisobenzofuran-1,3-dione (CAS 28281-76-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H6O4. Molecular weight: 178.14 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC9H6O4
Molecular Weight178.14 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965

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