Dacarbazine EP Impurity A CAS 4656-86-4

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.4656-86-4
Molecular FormulaC4H3N5O
Molecular Weight137.10 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Dacarbazine EP Impurity A CAS 4656-86-4 chemical structure

Description

CATO manufactures Dacarbazine EP Impurity A 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 Dacarbazine EP Impurity A (CAS 4656-86-4), a pharmacopoeial impurity reference standard (molecular formula C4H3N5O, MW 137.10 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to an amide group, a hydroxyl group, an ether linkage, Dacarbazine EP Impurity A is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 137.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

Physical & Chemical Properties

Molecular FormulaC4H3N5O
Molecular Weight137.10 g/mol
Purity>90%
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.)1958
Nitrogen Atoms5

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