Nα-Fmoc-D-histidine is an N-Fmoc-protected form of D-Histidine (H456015). D-Histidine is the unnatural, biologically inactive isomer of L-Histidine (H456010). D-histidine is known to inhibit cell division, and is also used by certain types of bacteria (such as Escherichia coli) as a source of L-Histidine.