Dimethyl (E)-2-(3-methoxyallylidene)malonate CAS 133445-85-9

Purity 97%+In StockPharmaceutical Standards
CAS No.133445-85-9
Molecular FormulaC9H12O5
Molecular Weight200.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Dimethyl (E)-2-(3-methoxyallylidene)malonate CAS 133445-85-9 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Dimethyl (E)-2-(3-methoxyallylidene)malonate.

CATO supplies Dimethyl (E)-2-(3-methoxyallylidene)malonate (CAS 133445-85-9), a certified reference material (molecular formula C9H12O5, MW 200.19 g/mol) for analytical method development and quality control.

The molecular framework of Dimethyl (E)-2-(3-methoxyallylidene)malonate (C9H12O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

CATO manufactures Dimethyl (E)-2-(3-methoxyallylidene)malonate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC9H12O5
Molecular Weight200.19 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1995

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