Rivastigmine Impurity 15 CAS 71607-31-3(free base)

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.71607-31-3(free base)
Molecular FormulaC20H18O8
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Rivastigmine Impurity 15 CAS 71607-31-3(free base) chemical structure

Description

CATO supplies Rivastigmine Impurity 15 (CAS 71607-31-3(free base)), a pharmacopoeial impurity reference standard (molecular formula C20H18O8H2O, MW 404.37 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Rivastigmine Impurity 15 (C20H18O8H2O) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 404.37 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), Rivastigmine Impurity 15 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 FormulaC20H18O8 H2O
Molecular Weight404.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present

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