Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC03475F, Communication Ally N Stonas, Michael D Pluth Hydrogen cyanide (HCN) is an emerging protic small molecule bioregulator and gasotransmitter candidate. We report HCN release from a series of light-triggered, self-Immolative cyanohydrin donors built on 4,5-dimethoxy-o-nitrobenzyl group (DMNB)...