cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester CAS 156293-34-4

Purity 97%+In StockPharmaceutical Standards
CAS No.156293-34-4
Molecular FormulaC11H16O5
Molecular Weight228.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester CAS 156293-34-4 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 cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester.

CATO supplies cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester (CAS 156293-34-4), a certified reference material (molecular formula C11H16O5, MW 228.24 g/mol) for analytical method development and quality control.

Structurally, cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester (C11H16O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 228.24 g/mol, it falls into the medium-molecular-weight range. 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures cis-4-Oxo-1,2-cyclopentanedicarboxylic acid diethyl ester 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 FormulaC11H16O5
Molecular Weight228.24 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.)2001

Recommended Standards

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