Sugammadex sulfoxide Impurity-2

Sugammadex sulfoxide Impurity-2 is a sulfur-containing oxidation derivative of Sugammadex, featuring a sulfoxide functional group (S=O) substituting a sulfide moiety in the parent cyclooligomeric GABA framework. This impurity arises from partial oxidation during synthetic processes, introducing a chiral sulfoxide center with altered steric and electronic properties compared to the parent API. The compound retains the cyclic γ-GABA backbone with sulfonic acid termini but exhibits distinct chromatographic behavior due to the polar sulfoxide linkage. It serves as a critical HPLC reference standard for monitoring oxidative degradation pathways in Sugammadex formulations.