diethyl ethylmalonate CAS 133-13-1

Purity 97%+In StockPharmaceutical Standards
CAS No.133-13-1
Molecular FormulaC9H16O4
Molecular Weight188.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

diethyl ethylmalonate CAS 133-13-1 chemical structure

Description

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.

diethyl ethylmalonate (CAS 133-13-1), molecular formula C9H16O4 and molecular weight 188.22 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C9H16O4, diethyl ethylmalonate contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 188.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

As a certified reference material (CRM), diethyl ethylmalonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC9H16O4
Molecular Weight188.22 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1957

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Why CATO?