Enalapril Diketopiperazine Acid (R-Isomer) CAS 219677-80-2

Purity 97%+In StockPharmaceutical Standards
CAS No.219677-80-2
Molecular FormulaC18H22N2O4
Molecular Weight330.38 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Enalapril Diketopiperazine Acid (R-Isomer) CAS 219677-80-2 chemical structure

Description

The occurrence of Enalapril Diketopiperazine Acid (R-Isomer) is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Enalapril Diketopiperazine Acid (R-Isomer) (CAS 219677-80-2), a certified reference material (molecular formula C18H22N2O4, MW 330.38 g/mol) for analytical method development and quality control.

Enalapril Diketopiperazine Acid (R-Isomer) (C18H22N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC18H22N2O4
Molecular Weight330.38 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2019
Nitrogen Atoms2

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