for the following products
Dde-L-Lys(Fmoc)-OH | Dde-Lys(Fmoc)-OH | N-1-(4,4-Dimethyl-2,6-dioxocyclohex-1-ylidene)ethyl-N-Fmoc-L-lysine | N-alpha-(4,4-Dimethyl-2,6-dioxocyclohex-1-ylidene)ethyl-N-epsilon-(9-fluorenylmethyloxycarbonyl)-L-lysine and N-alpha-1-(4,4-Dimethyl-2,6-dioxocyclohex-1-ylidene)
