Dopamine Impurity 101 CAS CATO-C4X-1908101

Purity ＞95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-1908101
Molecular FormulaC19H21NO3
Molecular Weight311.37 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Dopamine Impurity 101 CAS CATO-C4X-1908101 chemical structure

Description

The occurrence of Dopamine Impurity 101 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Dopamine Impurity 101 (CAS CATO-C4X-1908101), a pharmacopoeial impurity reference standard (molecular formula C19H21NO3, MW 311.37 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Dopamine Impurity 101 (C19H21NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

As a certified reference material (CRM), Dopamine Impurity 101 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 FormulaC19H21NO3
Molecular Weight311.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity＞95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms1

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