Buspirone Impurity 21 CAS 137583-05-2

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.137583-05-2
Molecular FormulaC6H10N4
Molecular Weight138.17 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Buspirone Impurity 21 CAS 137583-05-2 chemical structure

Description

Buspirone Impurity 21 (CAS 137583-05-2) is a certified pharmaceutical impurity reference standard with the molecular formula C6H10N4 and a molecular weight of 138.17 g/mol.

Owing to a nitrile group, an aromatic ring system, Buspirone Impurity 21 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 138.17 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.

CATO manufactures Buspirone Impurity 21 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 FormulaC6H10N4
Molecular Weight138.17 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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Nitrogen Atoms4

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