(S)-Dimethyl dioxolan hydroxylamine

(S)-O-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)hydroxylamine is a chiral intermediate used in the synthesis of pharmaceutical compounds, possibly including mirdametinib. It introduces stereochemistry and a protected hydroxylamine group, and must be monitored as a process-related impurity if present in the final product.