Methyl tetrahydrophthalic anhydride CAS 19438-64-3

Purity 97%+In StockPharmaceutical Standards
CAS No.19438-64-3
Molecular FormulaC9H10O3
Molecular Weight166.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl tetrahydrophthalic anhydride CAS 19438-64-3 chemical structure

Description

Methyl tetrahydrophthalic anhydride (CAS 19438-64-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H10O3. Molecular weight: 166.17 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC9H10O3
Molecular Weight166.17 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.)1962

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