Malic Acid Impurity 4 CAS 56235-92-8

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.56235-92-8
Molecular FormulaC20H38O5
Molecular Weight358.51 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Malic Acid Impurity 4 CAS 56235-92-8 chemical structure

Description

CATO manufactures Malic Acid Impurity 4 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.

CATO supplies Malic Acid Impurity 4 (CAS 56235-92-8), a pharmacopoeial impurity reference standard (molecular formula C20H38O5, MW 358.51 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Malic Acid Impurity 4 (C20H38O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 358.51 g/mol, it falls into the moderately-high-molecular-weight range.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

Physical & Chemical Properties

Molecular FormulaC20H38O5
Molecular Weight358.51 g/mol
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1973

Related Malic Standards

Recommended Standards

Why CATO?