Methimazole impurity 7 CAS CATO-C4X-20607

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-20607
Molecular FormulaC4H5N3OS
Molecular Weight143.17 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Methimazole impurity 7 CAS CATO-C4X-20607 chemical structure

Description

Methimazole impurity 7 (C4H5N3OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. 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).

Methimazole impurity 7 (CAS CATO-C4X-20607) is a certified pharmaceutical impurity reference standard with the molecular formula C4H5N3OS and a molecular weight of 143.17 g/mol.

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.

As a certified reference material (CRM), Methimazole impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC4H5N3OS
Molecular Weight143.17 g/mol
Purity97%+
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
Nitrogen Atoms3
Sulfur Atoms1

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