Desmethyl Galantamine

Desmethyl Galantamine is an N-demethylated tropane alkaloid derivative, structurally related to Galantamine, featuring an exocyclic double bond, a cyclohexene ring, and an ester functionality at the tropane nitrogen. Its core scaffold retains the pyrrolidinoindoline framework but lacks the N-methyl substituent present in the parent compound. This impurity arises during Galantamine synthesis via demethylation pathways, often as a process-related byproduct. It serves as a critical HPLC reference standard for quantifying impurity profiles in Galantamine drug substance analysis.