Indapamide Impurity 31 CAS 77083-52-4

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.77083-52-4
Molecular FormulaC16H16ClN3O3S
Molecular Weight365.83 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Indapamide Impurity 31 CAS 77083-52-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 365.83 g/mol gives Indapamide Impurity 31 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Indapamide Impurity 31 (CAS 77083-52-4) is a certified pharmaceutical impurity reference standard with the molecular formula C16H16ClN3O3S and a molecular weight of 365.83 g/mol.

Structurally, Indapamide Impurity 31 (C16H16ClN3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 365.83 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 Indapamide Impurity 31 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 FormulaC16H16ClN3O3S
Molecular Weight365.83 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1979
Halogen ContentCl-containing
Nitrogen Atoms3
Sulfur Atoms1

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