Mercaptopurine Monohydrate EP Impurity B CAS 73-24-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.73-24-5
Molecular FormulaC5H5N5
Molecular Weight135.13 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Mercaptopurine Monohydrate EP Impurity B CAS 73-24-5 chemical structure

Description

CATO supplies Mercaptopurine Monohydrate EP Impurity B (CAS 73-24-5), a pharmacopoeial impurity reference standard (molecular formula C5H5N5, MW 135.13 g/mol) used for the identification and quantification of trace impurities in APIs.

Mercaptopurine Monohydrate EP Impurity B (C5H5N5) contains a nitrile group. Its physicochemical properties are representative of its class; 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).

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.

CATO manufactures Mercaptopurine Monohydrate EP Impurity B 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 FormulaC5H5N5
Molecular Weight135.13 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms5

Related Mercaptopurine Standards

Recommended Standards

Why CATO?