Fmoc-3-nitro-L-tyrosine

Fmoc-3-nitro-L-tyrosine is an intermediate in the synthesis of a fluorogenic substrate for the determination of tyrosine residues in peptides by reverse phase high performance liquid chromatography (RP-HPLC). The product is synthesized by solid phase methods. Fmoc-3-nitro-L-tyrosine is prepared by reacting 3,4,5,6-tetrafluoroacetophenone with L-tyrosine in piperidine. The product can be cleaved to yield the residues and hydroxyl groups. The fluorogenic nature of Fmoc-3-nitro-L-tyrosine enables it to be used as a quenching reagent for the fluorescence of other compounds. This product can also be modified to become fluorescent or enzymatically active.